Day 2 Tue, March 14, 2023最新文献

{"title":"Evaluation and Optimization of A Novel High-Density and High-Temperature Resistance VES-Based Fracturing Fluid","authors":"Yee Ling Then, K. Ling, S. Goh, Daniel Thomas Melice","doi":"10.2118/214203-ms","DOIUrl":"https://doi.org/10.2118/214203-ms","url":null,"abstract":"\u0000 Viscoelastic surfactant (VES) is widely known to be a clean fluid for fracturing and gravel pack application. However, its low thermal stability had made the VES inefficient for high-temperature application. VES viscosity dramatically declines when temperature exceeds 300°F. Work has been done to explore the potential of a new VES to apply to high-density, high-temperature applications. Such VES could also serve as alternate option to conventional polymer-based fracturing fluid, which is known to create some level of formation damage due to polymer residue.\u0000 This study aims to evaluate the fracturing fluid of a novel VES system that exhibits improved performance at high-temperature (300°F to 350°F) in high-density brines. Industries commonly use heavy brines of different densities; monovalent sodium bromide (NaBr) and sodium chloride (NaCl) and divalent calcium chloride (CaCl_2) and calcium bromide (CaBr2) brines were used for this evaluation. In this paper, we investigate the rheological properties and viscoelastic behavior of VES. A high-pressure/high-temperature (HP/HT) rheometer was used to evaluate the fluid viscosity stability, elastic modulus (〖G〗') and viscous modulus (〖G〗′) measurements at elevated temperature. Surface tension, breaker, and coreflood tests were conducted to assess the fluid’s flowback ability and formation damage extent using synthetic core. The sand-bearing capability of the VES as a fracturing fluid was examined via a high-temperature sand settling test.\u0000 Testing results demonstrated that this novel VES shows good shear recovery and viscosity stability with a 12.5-ppg (NaBr) brine system when tested at temperatures up to 325°F. The fluid system showed the ability to break with good retained permeability. The 11.5-ppg CaCl2 brine-based fluid developed its viscosity as the temperature increased. It showed good stability when tested at 350°F, and it can be broken with good retained permeability. Both brine-based viscoelastic fluids were found to be compatible with a demulsifier at a concentration up to 0.2% by volume.\u0000 In conclusion, this novel VES system could be formulated with NaBr and CaCl2 brines for high-density fracturing fluid application.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129773917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reducing Adsorption of a Gemini Surfactant on Carbonate Rocks Using Low Salinity Water","authors":"S. Kalam, S. Abu-Khamsin, Afeez O. Gbadamosi, S. Patil, M. Kamal, S. M. S. Hussain, Emad Waleed Al Shalabi","doi":"10.2118/214177-ms","DOIUrl":"https://doi.org/10.2118/214177-ms","url":null,"abstract":"\u0000 Surfactants are widely employed in chemical enhanced oil recovery (cEOR) technique. The economics of a cEOR project is directly impacted by the amount of surfactant loss caused by adsorption on a rock. Therefore, surfactant adsorption reduction is imperative. Both static and dynamic adsorption experiments were conducted to test the adsorption reduction of a novel Gemini surfactant on Indiana limestone. This novel surfactant is tolerant to high-salinity and high-temperature environments.\u0000 Low salinity water was made by diluting sea water ten times. The salinity of Low salinity water was 6771 ppm. Rock characterization was performed first using XRD. Static adsorption tests were run using a crushed rock sample. Whereas core flood experiments were conducted to determine the dynamic adsorption behavior. High-performance liquid chromatography integrated with an evaporative light scattering detector was employed to calculate the unknown concentration of the surfactant.\u0000 The effect of both high and low salinity water along with Gemini surfactant was investigated on the static adsorption of Gemini surfactant on Indiana limestone. It was shown that high salinity conditions result in the adsorption reduction in comparison with Gemini surfactant in deionized water. However, the use of low salinity water in the aqueous solution of Gemini surfactant further results in reducing surfactant adsorption. Dynamic adsorption test on Indiana limestone was found consistent with static tests. The ultimate reduced adsorption value of Gemini surfactant on Indiana limestone was found to be 0.11 mg/g-rock using low salinity conditions in dynamic experiments. Such low value lies under the economic limit, making a chemical EOR process efficient and economical. The novelty of this work is the use of low-salinity water in reducing the adsorption of a Gemini surfactant on Indiana limestone. The use of such a technique helps industrialists and researchers in designing an efficient and economical chemical EOR process.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129849538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selection of the Appropriate H2S Scavenger Chemistry Based on the Mineral Scaling Risk","authors":"S. Baraka-Lokmane, Jean-Marc Boumera, Frédéric Faucheux","doi":"10.2118/214095-ms","DOIUrl":"https://doi.org/10.2118/214095-ms","url":null,"abstract":"\u0000 The study concerns a non-conventional field in the Middle East, where gas contains 4 mol% of H2S and 3 mol% of CO2. Gas is exported and production water is reinjected in the aquifer. The first target is to have H2S level in the injected water around 400 ppm and the second target is to have H2S level in the injected water lower than 60 ppm. Quantity of water to be treated will be around 10 000 bbl/d for the first weeks and decreasing up-to few 100s bbl/d after some months.\u0000 The objective of this paper is (i) the evaluation of the scaling risk; (ii) identification of suitable H2S scavengers and (iii) assessment of the effect of H2S scavengers on the calcite scale due to the increase of pH.\u0000 The scaling risk assessment has been performed with the help of a commercial scaling risk evaluation software. The scaling risk has been evaluated from well producer downhole to surface facilities. The precipitable masses of scales have been calculated.\u0000 The identification of suitable H2S scavengers has been based on (i) assets feedbacks, (ii) feedback from TotalEnergies headquarter laboratory tests results, (iii) H2S scavenger chemistries based on literature review and (iv) Chemical suppliers’ recommendations; (v) Assessment of the effect of H2S scavengers on the CaCO3 scale. The cost performance analysis has also been carried out.\u0000 The scaling risk assessment has shown at the wellhead, for early life production, in order to prevent both calcite and barite scales, the temperatures should be between 140°C and 120°C. If the temperature is equal to 150°C, a moderate risk of calcite is predicted. For late life production, if the temperature is equal to 100°C, moderate risks of both calcite and barite. At the 1st stage separator and flare KO drum, if temperatures are equal to 150°C and 140°C, a high risk of calcite is predicted. The suitable scale inhibitor has been selected with the help of dynamic tube blocking tests in the laboratory.\u0000 The synthesis of TotalEnergies laboratory tests results, affiliate and partner site feedback and literature review and according to the performance, reactivity, compatibility with water, increase of scale and impact of scale inhibitor performance, Glyoxal is the best in class followed by Methylene Bis-Oxazolidine (MBO), then the MEA triazine, then Hemiacetal, then Ethylenedioxy Dimethanol (EDDM) and finally 2-Ethyl Zinc Salt.\u0000 Field test has successfully shown that the Glyoxal H2S Scavenger has an excellent performance with no increase of calcite precipitation.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122623686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successful Implementation of Gas Driven Electric Power Grid Project for Wells and Facilities Electrification, Yielding GHG Emissions and Cost Benefits","authors":"Muhammed Abdelmonsef Abuhalawa, K. Alsawi, Muhammed Alsaied Atwa, K. Elhady, Mahmoud Elsayed Abd-Elhamed, A. Foda","doi":"10.2118/214242-ms","DOIUrl":"https://doi.org/10.2118/214242-ms","url":null,"abstract":"\u0000 \u0000 \u0000 Kuwait Energy is exploring, developing, and operating four concessions located in the Western Desert and the Gulf of Suez in Egypt; the company implemented many projects that had a significant impact on saving operating expenses and reducing greenhouse emissions to preserve the environment. One of these recent executed projects was replacing scattered diesel generators with a Central gas-driven electric power grid in Al- Jahraa field in East Abu-Sennan concession. In this abstract, we present the challenges we faced during the planning phase and execution strategy applied to overcome these challenges.\u0000 \u0000 \u0000 \u0000 Al-Jahraa Field includes 13 running wells, a waterflood station, and a main oil and gas production plant. The field electricity is supplied by 15 scattered diesel generators for wells and facilities, consuming 100,000 liters of diesel per month. During the feasibility study phase of the project, many challenges were faced which had a negative impact on the project’s economical assessment and that would result in cancelling the project, the challenges were summarized as following; the existence of wells at long distances from the site of the proposed main power station, which would require extending long lengths of electric power cables at a high cost, also the expected delay in the implementation and commissioning of the project resulting from the long delivery time of materials, especially copper cables and main switchgear during the COVID-19 pandemic.\u0000 Several scenarios were studied for connecting the wells to the power station:\u0000 The first scenario was to connect all wells and field facilities directly to the main power station. In this case, the estimated power cable lengths required to be extended were 25,000 Mt, in addition to using two 1 MW generators, one in service and the other would be a standby generator to provide backup power during a repair or maintenance service. This option economic model showed negative NPV due to the high cost of cables and extended execution time. Therefore, this option was cancelled.\u0000 The second alternative was to connect each group of wells to three power stations to be operated using three diesel generators of 500 kVA for each station, with three backup generators. But the implementation of this option would lead to saving the cost of copper cables by 50%, but the cost of purchasing generators would increase due to the increase in the number of stations accordingly, in addition to the increase in operating expenses resulting from the increase in fuel consumption and maintenance cost compared to the first option.\u0000 The third alternative, in which the economics of the project proved to be the best, is to divide the wells into three groups. Each of the two remote groups of wells are connected to an electric distribution panel, and then the two panels are connected by a main cable to the main power station.\u0000 Moreover, the project cost was reduced by 50% due to the implementation of the following innovat","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uplifting Engineer's Competency for Unlocking Asset Value in The Energy Transition Era: Cross-Organizational Knowledge Sharing Management System","authors":"H. Yonebayashi, H. Matsubuchi, Medhat Shoukry, Adel Abdul Rahman Al Marzouqi, Mohamed Elhassan Abdesalam Elmansouri, Hamda Mohamed Al Remeithi, Ibrahim Eshbair, Hiroshi Kawahara","doi":"10.2118/214218-ms","DOIUrl":"https://doi.org/10.2118/214218-ms","url":null,"abstract":"\u0000 E&P technology in the energy transition era is more rapidly progressed because of various innovations from other industries, digital transformation, and broader knowledge sharing from other industrial sectors. Therefore, skills of engineers in frontline: namely employees in operating companies (OPCO) will have deeper impacts on project values. To uplift their technical competency, this paper discussed how to maximize leaning/training program values and provide the opportunities from long term perspective as a part of holistic talent development management system. In-house leaning/training courses and/or commercial training programs, which have been commonly provided, will not be sufficient for pursuing competitive level in future as long as the knowledge sharing opportunities are limited to in-house or generalized contents for maximum numbers of demand. Thus, the opportunities are unlimited by incorporating additional seminar/training courses, offered from stakeholders: an asset lead in particular, into the OPCO's youth development plan (YDP) to be more effectively provided from many viewpoints of participant adequateness (discipline, technical interest, maximum number of attendees), annual schedule planning, and interactive feedback to improve the programs.\u0000 INPEX/JODCO, an asset lead international oil company (IOC) responsibly developing concession of the Abu Dhabi offshore field, has been operating domestic oil/gas fields and an abroad giant LNG project, furthermore, managing various non-operating projects all over the world. From all the projects, therefore, many types of knowledge-sharing seeds have been gathered to prepare seminar/training contents and lecturers via the IOC's corporate technical division while taking OPCO's demands into account. Dozens of programs have been offered since 2018 for various disciplines. One of them: the JODCO Drilling Academy (JDA), providing total 61 courses as of November 2022 covering major drilling & completion related topics is recognized as the most successful contribution. A cycle from seminar planning, execution, feedbacks, and updating are established to work as a cross-collaborative talent development management system.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127735105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing Local Talent from the Concession Area at United Energy Pakistan","authors":"Abdul Bari Nizamani","doi":"10.2118/214090-ms","DOIUrl":"https://doi.org/10.2118/214090-ms","url":null,"abstract":"\u0000 Objective/Scope: The purpose of this paper is to study how UEP has implemented Field Production and Maintenance Trainee Programs. It will further evaluate the effectiveness of the program and how it has benefited the local community and the company.\u0000 Methods, Procedures, Process: UEP's Field Trainee program provides opportunities for young people from the concession in which UEP operates. It creates jobs for local youth to get trained and work in the oil and gas sector.\u0000 The process to recruit the local and train them is extremely rigorous. The applications are invited via placing an advertisement in the local newspapers. Candidates meeting the criteria, undergo a rigorous test and interview process. Candidates shortlisted on merit are selected. The training of selected local high school graduates is initially performed in the classroom by senior faculty of renowned local Sindh university. After completing classroom training, they embark on an on-the-job training plan under the supervision of seasoned industry professionals.\u0000 Results, Observations, Conclusion: Over many decades the UEP trainee program has developed skillset of the locals and has given them employment opportunity. It has provided a talent pipeline for the organization and helped UEP give back to the community as part of its commitment. Several senior positions at UEP are occupied by employees inducted through this program. Some of them are working for other multinational organizations in Pakistan and abroad. Apart from developing the talent pool, this program has increased organization's brand value especially amongst the locals and has helped the organization forge meaningful relationship with the local community.\u0000 Novel/Additive Information: This program has been a great success story for UEP. It shows that benefits are not limited to meeting the workforce requirement. Other organizations in Pakistan and abroad can learn from UEP's success and may introduce similar programs. This program is mainly focused on hiring resources for Operations functions. Going forward, the need for introducing similar program for other functions can be evaluated.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116548479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Value Delivery in the Operate and Maintain Directorate at Petroleum Development OfOman. A Success Story of Implementing Continuous Improvement Fundamentals","authors":"Aisha Al Shukaili, Hilal Dughashi, Lubna Bahri, Yahya Riyami, Hamood Hashmi, Yousuf Zaabi, Kindi Nasser","doi":"10.2118/214225-ms","DOIUrl":"https://doi.org/10.2118/214225-ms","url":null,"abstract":"\u0000 Objectives/Scope: There are many challenges associated while operating in oil and gas fields, from field complexity, economic feasibility, risk response & mitigations and people management.\u0000 In Petroleum Development Oman (PDO), there are around 70 teams with more than 3000 employees responsible for operating and maintaining different environments for producing oil and gas with various operating conditions and risks. With the nature of recurrent operating challenges, there is a need to build the employees’ capability to self-running the process and decide the correct reactive actions in addition to being proactive to any possible future challenges. Hence the organization, with the support of Continuous Improvement (CI), decided to optimize the ways of working.\u0000 Methods, Procedures and Processes: To optimize the performance of the different ongoing processes at operate and maintain department (O&M), Continuous Improvement Fundamentals (CIF) were introduced in 2018 targeting all teams to be at the Established maturity level by mid of 2023. Established level refers to the ‘level of maturity where the team can run the business independently and adhering to all risks and opportunities’.\u0000 Teams at the established level have the right CI skill competency and infrastructure to independently make continuous improvements in line with the PDO CI standards.\u0000 CIF consists of 5 elements which focus on: Standardizing all critical processes.Visualizing KPIs for the critical processes.Having frequent team huddles to review the KPIs’ visual management.Having frequent team engagements to discuss all improvements raised by the team members because of the visual management review or any idea the team members think will help to improve the performance.All CIF are maintained by having a robust leader standard work (LSW) to ensure the sustainability of the CIF.\u0000 The CIF deployment journey is accompanied by a dedicated Lean program targeting all managers, team leaders and supervisors in (O&M). The program focuses on developing problem solvers and lean managers learning to develop each CIF within each team while transferring the knowledge to the subordinates through coaching, leveraging a structured Socratic questioning approach called coaching kata (CK). In addition, each CIF team is armed with qualified CI problem-solving facilitators.\u0000 Results, Observation and Conclusion: By end-2022, 50 out of 70 teams have reached the established level, which means 75% of critical processes for each team have implemented CIF. The remaining teams are expected to reach established by mid of 2023.\u0000 58 managers qualified as lean managers, around 18 mln USD in savings between 2021 and 2022 and 48 Full-time equivalents (FTE) timesaving.\u0000 Novel/Additive Information: Deploying CI fundamentals enables teams to be more innovative and provides an improved environment to prosper across all areas. In addition, rolling out the CI Fundamentals has shifted teams to utilize a Continuous Improvement ","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115571307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reservoir Modelling of Nanoparticle-Assisted Foam to Optimize Gas Injection in an Unconsolidated Heavy Oilfield","authors":"A. Bello, D. Dorhjie, A. Ivanova, A. Cheremisin, A. Cheremisin","doi":"10.2118/214161-ms","DOIUrl":"https://doi.org/10.2118/214161-ms","url":null,"abstract":"\u0000 Foam can be used as an enhanced oil recovery (EOR) technique because it can reduce gas channeling and gravity override during gas EOR operations by lowering gas mobility, which will bring about an increase in oil recovery factor. An integrated method for numerically simulating foam assisted by nanoparticles for EOR in a heavy oilfield is presented in this paper. The extent to which the gas EOR optimization techniques can lower gas breakthrough while boosting oil recovery was investigated through a series of numerical simulations. The aim of this study is to model foam flooding with nanofoams as an EOR technique that combines the oil recovery mechanism of foam flooding with that of nanoparticles. The interfacial properties contributed to the injection fluid served as a representation of the modeling of nanoparticles in the foam liquid. Our findings demonstrated that the recovery factor is higher during the injection of nanofoams than in water and gas flooding. In fact, for both nitrogen and CO2, the recovery factor of foam enhanced by nanoparticles was nearly twice as high as that of gas injection. Foam injection is more effective and productive than WAG and gas injection, which shows that it is the best EOR technique for the model utilized in this study. The simulation of the optimization techniques carried out will aid in the development of future development processes in this field.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124194454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deliver the Best Production Potential of the Multilateral Well in Tight Gas Carbonate Reservoir with Underbalanced Coiled Tubing Drilling (UBCTD)","authors":"B. Bernadi, H. A. A. Al Shehhi, Sara Saleh Abdulla Abdulla Al Ameri, F. Alawadhi, S. Mengal, Fawad Zain Yousfi, I. Mohamed, M. A. Al Hosani, A. A. Al Bairaq","doi":"10.2118/214148-ms","DOIUrl":"https://doi.org/10.2118/214148-ms","url":null,"abstract":"\u0000 The nature of tight gas reservoir consists of heterogeneous sub-units separated by impermeable denses and various depletion level has become the greatest challenge on how to exploit this typical reservoir at its maximum. Despite maximum reservoir contact is the best method to deliver the highest well production, this paper tries to tell another success story about UBCTD applied in a triple lateral well which can deliver greater productivity than a normal overbalanced multilateral well.\u0000 The study methodology begins with the evaluation of the current remaining potential sweetspots throughout the reservoir. The assisted history matching is used to generate 3 different model realizations: Low - Mid - High case that can map-out sweetspot distribution called Simulation Opportunity Index (SOI) map. SOI integrates 3 independent components selected from static and dynamic parameters: reservoir permeability-thickness, movable gas and reservoir pressure from a historically-matched dynamic model. One particular area is then selected and evaluated furthermore for the final new well and trajectory placement.\u0000 The well was drilled as a triple lateral with one of the lateral was fully placed in prime sub-unit that likely holds the potential remaining sweetspot in the area according to SOI method with expectation to maximize its recovery. During the drilling, UBCTD technique was implemented because it offers several advantages such as reduction of formation damage, reduction of drilling fluid loss into formation, avoiding losses-related drilling problems and risk of differential sticking and creating cost saving for completion and stimulation requirements.\u0000 Earlier study in the field signified that generally, the well productivity is strongly influenced by the type of the lateral and the geological structure. For instance, the triple lateral well located at higher structure normally gives higher productivity than the triple lateral well located underneath it. Theoretically, higher productivity will be given by the triple lateral compared to the situation if the same area is developed by dual lateral or even by the single lateral well. Currently, the implementation of UBCTD in this triple lateral well was confirmed to provide better productivity up to double exceeding a conventional overbalanced with the same well laterals. Greater initial gas production rate with high THP was evidenced during the well clean-up.\u0000 UBCTD application in tight gas reservoirs is not only aimed to improve the initial well productivity significantly beyond the conventional overbalanced well but it is also expected to create more equal pressure drawdown distribution along the lateral drain because of many given advantages as stated above. At last, cost saving can be performed because the operating cost which is usually spent on normal wells for well stimulation can be reduced.","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"248 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123314573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combining Integrated Project Management with Agile Hydraulic Fracturing Workflow to Successfully Deliver Infill Well Campaign in Heterogeneous Tight Volcanic Reservoir","authors":"V. Ranjan, Akash Damani, Kumar Gaurav, Alok Sharma, Aman Goyal, S. Tiwari, S. Jetley","doi":"10.2118/214094-ms","DOIUrl":"https://doi.org/10.2118/214094-ms","url":null,"abstract":"\u0000 Vedanta Ltd, Cairn Oil & Gas operates a tight gas field which produces majorly from the volcanic reservoir. Commercial production is possible post hydraulic fracturing which has been established through successful fracturing campaigns in the past. Hydraulic fracturing in volcanics is a complex operation due to the inherent heterogeneity and associated uncertainty of reservoir properties in these tight formations (~0.1 md). With added challenge of stimulating infill wells landed in partially depleted zones, fracturing becomes the key operation governing the ability to meet production target, project timelines and associated costs.\u0000 Based on new seismic data obtained during field production and previous campaigns, Cairn executed a development campaign and is now following up with an infill campaign to improve and sustain the production plateau in the Raageshwari Gas reservoir. With consideration of economics of the field development, a strong focus on continuous improvement, optimization and developing the subsurface understanding along with lean and integrated project and contract management strategies to improve operational performance were key to achieving project objectives.\u0000 A continuous improvement strategy through production technology initiatives was applied to stimulation campaign by re-designing completion, exhaustive data gathering/analysis and optimizing stage count, proppant volume through machine aided data analytics, testing and clean-up time, minimize hookup time to achieve execution targets and accelerate and maximize production time. Proppant onset calculations and well operating envelop were re-defined to ensure longevity to wells. Apart from summarizing the key learnings of the re-development campaign from a petroleum & completion engineering standpoint, the paper would emphasize on the challenges expected & observed and mitigation methods in the infill campaign - the most noticeable of the challenges being depletion.\u0000 The project resulted in successfully completing 42 wells with ~ 250 frac stages and strategically placing ~ 63 million lb of proppants in gas producing zones. This lead to the production increment of ~ 40% to the overall production which has proven critical to plateau extension. The learnings also form the basis of the future infill campaign.\u0000 Apart from the technical considerations, the paper would expand on the integrated project management strategies which resulted into achieving volume targets within the assigned budget while managing the local considerations and field specific challenges during the execution phase.\u0000 This paper lays out a framework on optimized data collection, evaluation and integration for continuous improvement. It maps the uncertainties associated with highly laminated reservoirs and challenges to look at in an infill campaign. Most importantly the Integrated Contract & Project Management framework would provide operators with valuable insights to execute a frac intensive development/inf","PeriodicalId":349960,"journal":{"name":"Day 2 Tue, March 14, 2023","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128693496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}