Day 1 Tue, August 09, 2022最新文献

{"title":"The First Application of a Coiled Tubing Catenary System in the Gulf of Thailand. A Technology Break Through for Offshore Facilities with Space and Weight Limitations","authors":"Jantima Uasetwattana, Surachai Kanchiak, Chaichana Kornkitsuwan, Reawat Wattanasuwankorn, Nophadol Jiemsawat, YeaLee Toh","doi":"10.2118/209873-ms","DOIUrl":"https://doi.org/10.2118/209873-ms","url":null,"abstract":"\u0000 Coiled Tubing (CT) catenary technology supports the possibility of executing offshore interventions on platforms with space and weight limitations. Having the majority of the CT equipment remain on a separate support vessel vastly increases the platform working area and minimizes offshore heavy lifting. The system allows the operation of well control and pumping equipment from the vessel for a single control source and an overall faster, safer, lower-cost operation.\u0000 Limited offshore platform space and crane capacity are a significant concern for intervention operations in the Gulf of Thailand. A conventional CT unit is simply unable to fit on a small offshore facility. The catenary system was introduced to eliminate these limitations by keeping the main CT equipment on the vessel while providing the connection and interface between the vessel and platform equipment, allowing a safe and efficient operation. It also has the flexibility to enable the vessel to adjust its location during bad weather if required, without affecting the overall safety of the operation. The same system can also be used on regular platforms without space and weight limitations during the same campaign.\u0000 The catenary system saved two days per well, resulting in savings due to less equipment utilization, reduced personnel, and accommodation requirements, and reduced consumables used. Less heavy lifts also saved time, associated costs, and increased safety during the preparation phase. The CT operator can also load the maximum length of CT pipe onto the vessel without concerns about having to join multiple strings or using split reel spooler equipment. All well control equipment was function tested and operated as standard with real-time monitoring and capturing of well conditions, operation parameters, and CT fatigue the same as expected from a conventional CT setup. The paper will elaborate on the catenary principles, concepts, and engineering background for these types of operations.\u0000 The CT catenary was proven to bring significant efficiency improvements, safety enhancements, and faster operations, leading to cost-saving when carrying out CT interventions in the Gulf of Thailand. The techniques and details will be elaborated on in the paper.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123532886","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":"An Innovated Image-Based Approach for Logging-While-Drilling Image Quality Improvement in Stick and Slip Phase","authors":"Shiduo Yang, Fayez Al-Mutairi, Tianhua Zhang, A. He, C. Shrivastava, Y. Shim, Ihsan Taufik Pasaribu","doi":"10.2118/209913-ms","DOIUrl":"https://doi.org/10.2118/209913-ms","url":null,"abstract":"\u0000 Stick/slip motion is an extremely severe torsional oscillation that can cause the drill bit to come to a complete stop and then followed by an extra acceleration of the surface rotation. Due to the lack of downhole sensors for direct speed measurement of logging-while-drilling (LWD) image tools, the depth measured on the surface can appear to be smoother than the downhole sensors’ real movement. Using the smoothed surface depth for time-to-depth gating of the images might lead to the formation features appearing to be compressed or stretched semicyclically in the depth domain when sensor stick/slip occurs.\u0000 In this paper, an innovated approach is presented to restore image features altered by the depth desynchronization and stick/slip issue. This method initially identified the drilling status from the interpolated surface depth in a time domain, including sensor movement direction; i.e.,drilling down or reaming down, tool stop, and connection breakdown time. In parallel, the drilling statuses were also identified from a downhole image feature similarity and the artificial intelligence (AI)-aided functions. The surface depth can be synchronized to downhole image measurements in the time domain based on the identified drilling statuses. In the end, the stick/slip time intervals were identified from the synchronized depth when the depth variation exceeded the image's vertical resolution, and the pseudovelocity was filtered and computed in the time domain. The stick/slip image features were restored in the depth domain efficiently after time-to-depth gating using the new processed depth.\u0000 This new approach will be applied to an LWD ultrasonic image obtained from a Middle East carbonate reservoir. The drilling statuses were identified confidently in the time domain and no additional stick/slip features were found in the image data in the depth domain. The processed images revealed the reservoir heterogeneity with clear vug features, additional bedding boundary, and confident fracture features.\u0000 In a severe stick/slip mode, the LWD resistivity image was processed with downhole speed correction from the multiple sensors’ signal, but the block image features remained on the image in the depth domain. The image features were restored efficiently with an adapted solution from this innovative approach.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128300602","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 Application of Fishable and Sectional ESS Completion Technology for Sand Control _ A Case History in SHAD Field","authors":"Lina Zhang, Heng Zhang, Jintong Hu, Songjie Zhang, Wenling Yang, Changlu Yang, Xueliang Yu, Yuhong Hao, Bin Wang","doi":"10.2118/209868-ms","DOIUrl":"https://doi.org/10.2118/209868-ms","url":null,"abstract":"\u0000 SHAD oilfield, located in one of the fields with the highest onshore production in the Middle East; more than 70% of its production wells are flowing wells, with an average single well production capacity of more than 3000 bbl/d. Its main oil production formation is loose sandstone reservoir. The completion style of its production wells are generally completed casing perforation, and sand production is obvious after a period of exploitation. In the process of production, sand cleaning and sand discharging are often needed in the perforated section of oil well; however, after 3-5 years of production, serious sand burial still forces developers to give up the original production formation. In addition to the problem of sand production, there are many complex layers, some of them are oil-water layer, and the increase of water in the liquid production gradually affects the well flowing.\u0000 Fishable and sectional expandable sand screen (ESS) completion technology is developed to deal with sand production and the increase of water production. The upper of the original production formation of the old wells is as the new production formation. The new formation is divided into several sections due to different physical properties. Perforation is carried out at the same time for all sections. After this, each the ESS completion string is run into each section. The top sealing hanger and the bottom packer will seal each ends of the annular between ESS and perforating casing, thus to form independent production section. In later process of production, plugging tools is run for sections if needed, so as to realize selective open/ close of different sections. Special fishing tools are developed, combined with the mechanical plastic characteristics of ESS, which can realize the fishing of the completion string. This solves the problem of fishing long string, and provides good conditions for subsequent operations.\u0000 The research results show that two good results are obtained. One is that arranging several sections of ESS completion strings in the old well bore gives full play to the characteristics of ESS with strong flow capacity, good sand control effect, and is suitable for sand control in high-yield wells. The other is that selective open/close is realized for different sections which meets the sand control and production needs of in SHAD oilfield.\u0000 The research results have applied to 9 wells in SHAD oilfield, and the success rate is 100%. Among them, one single well is divided into three sections, and the production is stable, the sand production is near to 0, and the sand control effect is significant. The successful application of this technology fills up the gap of multi-stage ESS completion in the Middle East.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131998452","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":"Establishing Sustainable Oil and Gas Industry: Directional Drilling & Measurement/Logging While Drilling Remote Operations to Achieve Net Zero Carbon Future in Indonesia","authors":"Jacqueline Choo, Bonar Noviasta, Aldian Ikhsan Hakim","doi":"10.2118/209896-ms","DOIUrl":"https://doi.org/10.2118/209896-ms","url":null,"abstract":"\u0000 The Indonesian government has a goal to reduce 834 million-tons CO2e emissions by 2030 with 314 million-tons CO2e portion coming from the energy sector. A significant contribution is required from all aspects of the energy sector, including Directional-Drilling (DD) & Measurement/Logging-While-Drilling (M/LWD) activity which traditionally deploys human resources for field execution. With the government’s increased hydrocarbon lifting target, an innovative approach is needed to keep the field carbon footprint low while still maintaining DD-M/LWD operational excellence.\u0000 Performance-Live is a digitally collaborative service that enables live remote-control of wellsite operations to optimize task distribution between the well site and town thus boosting operational efficiency. As a solid foundation to execute these remote operations, highly skilled Performance-Live Engineers (PLE) are centralized in a Performance-Live Center, monitoring several rigs in parallel, while multiskilled DD-M/LWD Cross Trained (DDX) who are fully competent to handle both competencies are staffed at the well site. This collaboration can be seamlessly achievable by leveraging elevated digital peripheral systems such as advanced, automated internet technology and support centralized in the main Java island to enable robust connectivity.\u0000 Flexible strategies for remote-operations implementation play a significant role in sustainability. In one of the land projects in Indonesia started from Q3 2020 until Q4 2021, 31 wells are drilled successfully using the Performance-Live service. This reduced headcount from 4 personnel to 3 personnel on board (POB) resulting estimated total of 3.52 metric tons of CO2 emission reduction. Another offshore pilot project in Indonesia for the one-month trial duration in 2021 with the same strategy resulted in the reduction of estimated 0.20 metric tons of CO2 emission. In one of the special projects in the same offshore area, an innovative open-hole drilling using Hydraulic Workover Unit (HWU) is implemented using Performance-Live and combined cabin container unit for DD-M/LWD-Mud Logging as full team collaboration. During this 5-months project, this single combined cabin unit enabled 4 field personnel reductions resulting estimated 4.01 metric tons of CO2 emission reduction. The continuity of this service in Indonesia can be potentially developed by further reduction from 3 to 2 POB (2x DDX with 2x PLE) which may result in double of the CO2 emission reduction, and a pre-prepared BHA model which will minimize POB rig days to reduce further estimated of 18% CO2 emission.\u0000 This paper presents how the Performance-Live Remote-Operation model contributes to long-term sustainability goals, quantifies the amount of carbon footprint reduction, and speeds up the race toward net zero emissions future accomplishment in Indonesia. This paper will also present strategies for building a digital ecosystem for remote-operations implementation, challenges enco","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130127591","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":"Stiff String Casing Design with 3D Orientated Casing Wear","authors":"B. Nobbs, F. Aichinger","doi":"10.2118/209876-ms","DOIUrl":"https://doi.org/10.2118/209876-ms","url":null,"abstract":"\u0000 The forces and stresses along a casing string are modelled using a stiff string torque and drag model. A post analysis of casing loads and stresses, considering wellbore tortuosity and centralisation is performed in addition to the effect of 3D orientated casing wear. A post analysis case study is presented to show the resulting effect on axial, burst, collapse and VME safety factor as well as VME body and connection design envelopes.\u0000 While running in hole (RIH) a tubular, the industry standard is to assume a smooth wellbore when performing a torque and drag calculation. The drilling process can cause significant local doglegs and ultimately increase the tortuosity of the wellbore. When applying a soft-string torque and drag model, it is possible that the stiffness, radial clearance, and high frequency surveys are not directly considered. The stiff string torque and drag and buckling model can model these effects, as well as the addition of rigid and flexible centralisers. This study involves the comparison of different casing design load cases, using the actual tortuosity of a drilled wellbore considering a 3D orientated casing wear.\u0000 The results show that there can be noticeable differences in overall axial stress with the addition of tortuosity. The stiff string model can directly calculate the additional bending stresses experienced by the tubular and this additional stress can be particularly prevalent while RIH casing with centralisers and high tortuosity. The reduction in API and VME stress envelope is also quantified using a 3D orientated casing wear model. A better understanding of axial stress state reduces risk of well integrity issues and can pinpoint areas along the casing in which special care must be taken during well intervention.\u0000 This paper will show the benefits of using a stiff string torque and drag model during casing design. Highly tortuous wellbores, especially ERD and HPHT wells, may exhibit stresses that are vastly different than assumed during preplanning phase. The design API/VME envelope may also be reduced due to casing wear.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"332 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134316947","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":"Easy Life with Automated Digitalised Analytic Tools for Well Integrity Management for Unstructured Brown Field","authors":"Kittipat Wejwittayaklung, Apiwat Nadoon, Kittithuch Hnuruang, Pavin Piron, Potchara Promwikorn, Prasert Jirajindakul, Rossawan Chandakaew, Supoth Singsa-Nga, Takonpran Kunpitaktakun, Wararit Toempromraj, Yaovanart Yokrat, Pornchuda Konganuntragul","doi":"10.2118/209836-ms","DOIUrl":"https://doi.org/10.2118/209836-ms","url":null,"abstract":"\u0000 To ensure all wells are in good and safe condition and can be operated as designed, the well integrity of individual wells must be maintained. However, lack of utilization and analysis of the well integrity status in brownfields with lots of qualitative data, the different well integrity standards, especially in newly acquired assets with unconsolidated well integrity database, and limited resources. The Well Integrity Management project was then proposed, and the Visualization Management Platform (VMP) was created.\u0000 The VMP will centralize the well integrity database for all operating assets, develop a \"Well Failure Model\" for better classification of well integrity problems with the right actions to be taken, and develop a visualization of well integrity status using the business intelligent application in Power BI, for mapping well integrity status with other critical related key information i.e. production performance, remaining reserves, and integrity records. It will automatically generate a work plan based on the priority to be executed, well location distance, and weather forecast, automatically generate a work program to reduce the engineer's task, and automatically send an alert notification to the related person to prevent overdue tracking.\u0000 More than 3,000 wells have been effectively monitored and managed thru this platform with limited resources. The VMP defines and provides the operating standards and guidelines to maintain well integrity, ensuring safe well operations. The system can provide real-time monitoring for better planning and minimizing backlog, better decision making on well utilization management, set the priority for well maintenance, and create an efficient Workplan for well services working team, as well as minimize routine tasks for an engineer in issuing well integrity work program. Moreover, the system will send an auto alert to the responsible person when there is any issue about well integrity to reduce work process cycle time which will reduce the potential risks to well equipment and personnel. The system is also useful for plug and abandonment when wells have come to the end of their lives because it contains information about the history well activities and current well status. Not only do the existing operating asset get benefits from this platform but also the management and the asset team.\u0000 Digital technologies were used for real-time extracting information from several types of data formats, integrating it into the data lake in Google Cloud Platform, and demonstrating in the Business intelligent tools. This was the showcase to apply the digital tools supporting the brown field's well integrity management to improve the well assurance and make your wells safe for everyday operations.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115869404","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":"Study on Dynamic Variation Characteristics of Reservoir Fluid Phase Behavior During CO2 Injection in CO2 Based Enhanced Oil Recovery Process","authors":"Mingsheng Zuo, Hao Chen, Chenghao Xu, Infant raj Stephenraj, Xinyu Qi, Haizeng Yu, X. Liu","doi":"10.2118/209904-ms","DOIUrl":"https://doi.org/10.2118/209904-ms","url":null,"abstract":"\u0000 CO2 huff and puff is an effective EOR technology for tight reservoirs. However, the mass transfer between CO2 and oil makes the reservoir fluid phase behavior very complex and affects the reservoir recovery. Through the visual injection experiment, phase equilibrium calculation model and thermodynamic parameter entropy, this paper researches the change characteristics of oil phase behavior during CO2 injection. In this paper the oil phase behavior is divided into four stages and reveal the mechanism of oil phase behavior changes. The results show that in the first stage of CO2 injection, CO2 dissolves in the oil and the volume of oil expands. In the second stage, CO2 dissolves, replaces and extracts the components of the oil, forming the third phase oil-gas transition zone, so that the volume of the oil decreases rapidly. In the third stage, the mass transfer of oil-gas components slows down, and CO2 extraction effect becomes the main factor, so the oil-gas transition zone almost disappears, and the volume of the oil decreases slowly. In the fourth stage, the mass transfer of oil and CO2 stops, and due to the compression effect the volume of oil decreases linearly. Because of the effects of extraction and compression, excessive injection of CO2 is not conducive to enhanced EOR. These results can furnish an in-depth understanding of the complicated mechanisms of the CO2 huff and puff in unconventional reservoirs.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129622584","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":"Conceptual Casing Design for a HPHT Carbonate Development Project with High CO2 and H2S Contaminants","authors":"Swee Hong Gary Ong, Ungku Syafena Ungku Hamzah, J. Manson, Ahmad Hakam Bin Abdul Razak, L. Umar, N. Kongpat, C. Grant, Kittipat Wejwittayaklung, Pornchuda Konganuntragul, Nuttapon Piyakunkiat, Khairul Abdul Rashid, Wararit Toempromraj, C. Chanpen, P. Bandyopadhyay, Mohamad Kamal Bin Hamdan, Prapapor Jantasuwanna","doi":"10.2118/209857-ms","DOIUrl":"https://doi.org/10.2118/209857-ms","url":null,"abstract":"\u0000 HPHT wells are typically associated with high complexity, technically challenging, long duration, high risk and high NPT as many things could go wrong especially when any of the critical nitty-gritty details are overlooked. The complexity of this project is amplified with very high level of contaminants compounded by high pressure and high temperature environment.\u0000 In the conceptual planning phase for the upcoming development of such project where its scale and severity are unprecedented in the country/region, a fit for purpose casing and tubing design is critically important to ensure the well integrity over its design life is assured. At the same time, cost optimization can be achieved utilizing industry practices, testing and qualification of materials and vast learning from incidents and failures occurred in similar HPHT projects over the last three decades scattered around the world.\u0000 This paper intends to outline the challenges and optimization of casing design philosophy which is drawn upon various perspectives such as long term well integrity, drilling operations, working stress design, effect of compaction and subsidence, probability of failure analysis, multi-well thermal analysis, downhole material corrosion performance, connection performance and a combination of all the above in a holistic manner.\u0000 A particular focus would be discussing the delicate balancing act between satisfying the working stress design of downhole tubular versus the complexity of downhole material selection work. With the given challenging environmental condition, this points towards exotic type of CRA materials which require certain magnitude of yield strength deration attributed to the given environmental condition and their respective manufacturing processes.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121722777","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":"A Methodical Approach of Trialling New Technology Towards Advancement in Drilling Performance","authors":"Andre Wusten, F. Mounzer","doi":"10.2118/209838-ms","DOIUrl":"https://doi.org/10.2118/209838-ms","url":null,"abstract":"\u0000 Many organizations have a shared goal of always exploring new and different ways to improve operational efficiencies while lowering associated operational expenditures. During economic downturns or periods of suppressed pricing such as the oil and gas industry has experienced in recent years, such programs attract more focus and attention.\u0000 Adopting and refining the learning curve process is a crucial part of identifying potential areas of improvement and attaining high-quality performance increases while minimizing lost time.\u0000 It is also not uncommon for similar organizations to explore alternate tactics and new technology during difficult times. Those must be capable of overcoming identified bottlenecks and securing additional gains toward higher efficiency. In such instances, the ability to assess and quantify the advantages of the chosen efforts is critical. This is usually accomplished by establishing a stable baseline that may serve as a dependable benchmark.\u0000 In preparation for an upcoming drilling campaign, where equivalent circulating density (ECD) margins are critical, a North Sea operator used a similar structured approach to integrate a new innovative stabilizer design (ISD) into its standard bottom hole assembly (BHA) configuration as a replacement for the traditional spiral stabilizer with its known flaws.\u0000 The ISD's hydrodynamic design allows for enhanced displacement of fluid and cuttings along the tool, supporting improved ECD control. The objective was to compare and quantify the possible advantages of the new technology over conventional tools.\u0000 In each of the intended runs, an additional carrier sub, with vibration and pressure sensors, was placed directly below the stabilization points to ensure a reliable benchmark and qualitative comparison.\u0000 Following the trial runs, a full analysis was done in a collaborative effort involving all stakeholders concerned. The outcomes of the trial and study proved encouraging. As a result, the plan is to use the new stabilizer design in future drilling campaigns and explore additional documented benefits.\u0000 The concepts and techniques underlying the established learning curve are outlined in this paper, as well as how this ongoing work has contributed to improved performance and overall well design and delivery. The expected ECD challenges and limitations of the upcoming drilling campaign are highlighted. The report also explains the science underlying the tried-and-true new stabilizer design, as well as the novel features and sought-after benefits. In addition, the authors will discuss the conditions designed to provide an as close and qualitative comparison as possible, as well as the agreed-upon key performance indicators (KPIs) for this study. The data will be analysed, and the overall performance will be compared to offset wells. The report concludes with a brief discussion of the attained results and conclusions, as well as the plan forward with the tested technology.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130833642","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":"Continuous Improvement on the Performance of Innovative 360 Rolling Diamond Element and Conical Diamond Element Bit led to Save 2.9 Days from Drilling in Hard and Abrasive Sandstone Formation","authors":"Lan Ngo Vi, Wanwarang Khobchit, Teerawat Teerachotmongkol, Biju James, A. Abbasgholipour, Thamonwan Kongsirinurak, Thanakorn Tungperachaikul, Sorawit Amranand, Nawapol Panmamuang","doi":"10.2118/209900-ms","DOIUrl":"https://doi.org/10.2118/209900-ms","url":null,"abstract":"\u0000 Mid Nam Phong Formation in Thailand’s Sinphuhorm Field consists of hard and abrasive sandstone with unconfined compressive strengths (UCS) of 12,000–24,000 psi. Polycrystalline diamond compact (PDC) drill bits used for the 8.5-in. section through this formation were providing low rates of penetration (ROPs) and showing heavy wear, with just 50–180 meterage drilled per run. Multiple bit runs were raising drilling costs. A new drill-bit design to address these challenges is presented.\u0000 Rolling cutter (RC) 616—an 8.5-in. drill bit with 16 mm cutters that rotate 360°—is holding the ROP record in offset wells, delivering 3.1 m/h compared with the average 2.15 m/h, a 44% improvement. Rolling elements use the entire circumference of the cutting edge to cut the formation, enabling them to stay sharper and longer. Conical diamond elements (CDE), which provide improved impact strength and greater resistance to abrasive wear, replaced some of the conventional cutters. Based on this result and lessons learned, a new and more robust bit design was proposed featuring 19 mm rolling cutters and conical diamond elements. To combat the damaging vibration observed in offset wells, which could further reduce ROP and increase the likelihood of premature drill-bit and downhole tool failure, a special bottom hole assembly that combined a rotary steerable system and a downhole motor was deployed to reduce stick/slip. Comprehensive simulations provided a detailed road map of drilling parameters that were used to minimize shock and vibration.\u0000 The new 8.5in. drill bit and BHA drilled the entire section through the Mid Nam Phong Formation in one run and at a record ROP of 4.9 m/h—58% higher than the maximum rate achieved by the RC616 bit—saving 57.8 hours. The assembly also drilled an additional 179 meterage into the Lower Nam Phong Formation, eliminating the separate bit run that had been required in offset wells. The customer saved 2.9 days or USD 130,000 in total and a new standard of drilling performance was established.\u0000 The new concept of PDC bit combining 19 mm rolling cutters and conical diamond elements expands the limit of PDC bit durability drilling hard and abrasive sandstone formation. This new type of bit can efficiently drill in those challenging geological condition reducing the drilling time and cost.\u0000 This paper will discuss the application and evolution of rolling cutter bits, along with the results achieved by this bit.","PeriodicalId":385340,"journal":{"name":"Day 1 Tue, August 09, 2022","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116800138","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}