Day 3 Thu, November 17, 2022最新文献

{"title":"Application of Software Tools to Optimize Drilling Horizontal Wells in Mature Fields","authors":"B. Zhiyenbayev, K. Ashimov, B. Khasanov, D. Kurmangaliyev","doi":"10.2118/212083-ms","DOIUrl":"https://doi.org/10.2118/212083-ms","url":null,"abstract":"\u0000 Analysis of previously drilled horizontal wells in mature fields showed a lack of monitoring of drilling parameters in real time. For example, complications during the drilling process (slack off / pick up), low rate of penetration, poor wellbore cleaning, and as a result mechanical and differential, increased uncertainty of the location of wells leading to the risk of collision with other wellbores, also casing running problems and cementing.\u0000 The issue of monitoring drilling parameters in real time, considering the actual drilling parameters obtained from the well, is extremely important and in demand.\u0000 The workflow includes linking preplanned engineering calculations with actual data while drilling using software applications to optimize the following parameters:\u0000 mechanical integrity of the drill string and efficiency of the BHA depending on the type of operation (tripping in, tripping out, rotary drilling, slide drilling and etc.); drilling fluid circulation in the wellbore to ensure its cleaning and downhole pressure control (minimum flow rate and equivalent circulating density); calculation of running casing strings (trip speed, circulation, calculation of lateral forces etc.).\u0000 The described process of real-time monitoring of horizontal wells makes it possible to identify and prevent deviations from drilling technology at early stages and during drilling, thereby significantly reducing the likelihood of drilling problems and accidents, and as a result, it had a positive effect on the timing of well construction and its quality. This article demonstrates the method of control and production of calculations in accordance with actual data to optimize the drilling of horizontal wells in the fields. Examples of wells from several fields in the West Kazakhstan region where this technique is used are shown.","PeriodicalId":380218,"journal":{"name":"Day 3 Thu, November 17, 2022","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115410339","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":"Feasibility Study of a Polymer Flood for the Uzen Brownfield Conditions","authors":"B. Imanbayev, R. Kushekov, Marat S. Sagyndikov, Damir Shyrakbayev","doi":"10.2118/212091-ms","DOIUrl":"https://doi.org/10.2118/212091-ms","url":null,"abstract":"\u0000 The Uzen field development stage is characterized by high watercut (~90%) due to long-term waterflooding and a recovery factor of 34,6%, which is appropriate for moving to the tertiary recovery methods, especially chemical EOR. Polymer flooding (PF) is a promising chemical EOR technology to provide incremental oil and extend the field life. Therefore, the main features of PF were investigated and screened for the Uzen field conditions within the scope of the feasibility study.\u0000 The main geological characteristics of the reservoir were examined to confirm polymer flooding applicability. Reservoir dynamics analysis was conducted to identify the main problems of the current development strategy. Water composition analysis was carried out to assess available water sources in terms of polymer compatibility. Based on Daqing oilfield PF experience, the watercut dynamic behavior was used to determine incremental oil amount for the potential pilot area in Uzen. Since technical feasibility studies are done, economical feasibility has been conducted considering current oil prices.\u0000 Parameters such as temperature, permeability, oil viscosity, and brine salinity were found to be the most critical for polymer flood. Two water sources out of three available in the Uzen showed the compatibility of polymers according to water composition analysis. The first priority is given to Cretaceous formation brine as the most appropriate and the second priority is given to Caspian seawater. The potential pilot area with 3 injectors and 14 producers has been selected and forecasted in terms of PF production. PF technology performed for 10+ years resulting in 4.7% of incremental oil recovery. Polymer flooding has proven to be an effective development strategy as a tertiary recovery method that hopefully will be applied in the coming years.\u0000 Although polymer flooding has been used for the past ~60 years, for the Uzen field polymer flooding is a step away from being applied for the first time. Observations and obtained results are the basis for future design, implementation, and optimization of PF in the Uzen oilfield.","PeriodicalId":380218,"journal":{"name":"Day 3 Thu, November 17, 2022","volume":"689 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125524457","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":"Defining the Fracturing of Carbonate Reservoirs After Multistage Hydraulic Fracturing","authors":"A. A. Isaev, R. Takhautdinov, I. M. Yunusov, M. G. Novikov, V. I. Malykhin","doi":"10.2118/212139-ms","DOIUrl":"https://doi.org/10.2118/212139-ms","url":null,"abstract":"\u0000 Hydraulic fracturing is fundamental to optimizing the development of carbonate reservoirs at fields on the western slope of the South Tatar arch in the Republic of Tatarstan. The importance of hydraulic fracturing is becoming increasingly decisive for the exploration of oil fields as the total scope of hydraulic fracturing is increasing and, consequently, the share of man-made fracturing is also increasing. The paper proposes a solution to the problem of obtaining reliable data on the nature of newly formed conducting structures and the seepage flows of formation fluids during the development of producing formations, faced by oil and gas field operators. The article also provides the analysis results of the properties of a man-made fracturing and their spatial propagation, triggered by multistage fracturing (MSHF) in horizontal well ends. The studies revealed that increased volume of proppant injection leads to an expansion of fracture's dimensions, the length being more and the height much less, while the intensity of microseismic emission is correlated with the proppant flow rate. In the process of hydraulic fracture formation, concurrent activation of the existing natural fractures occurs. Increasing the injection volume leads to greater spatial coverage of the reactivation area of existing fractures. Based on the concept of critically stressed state of the rock massif, the obtained network of natural fracturing has been schematized. The identified fractures can be grouped into fracture systems with conditional kinematics according to the Coulomb-Anderson model as reverse faults of northwest extension with the azimuth of 146.79° (326.79°), as normal faults based on azimuth of HF fractures, as strike-slip faults of northeast and west-northwest extension with azimuths of 24° (204°) and 95 (275°), respectively. The obtained results mostly confirm the common nature of the spatial variation, the causes of its occurrence, and progression of a field of fractures Besides, to increase the efficiency of well operation the technology of gas evacuation from annular space of the well and its partial utilization by means of KOGS compressor unit was applied at the wells under examination (3292 and 3294).","PeriodicalId":380218,"journal":{"name":"Day 3 Thu, November 17, 2022","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131752705","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":"Enhanced Oil Recovery Techniques to Develop Mature Oilfields","authors":"A. A. Isaev, R. Takhautdinov, I. M. Yunusov, M. G. Novikov, V. I. Malykhin","doi":"10.2118/212140-ms","DOIUrl":"https://doi.org/10.2118/212140-ms","url":null,"abstract":"\u0000 Enhanced recovery of residual deposits from the mature fields with steadily increasing water cut is considered one of the most important tasks in oil field development. This is particularly relevant for terrigenous deposits of minor oil fields under the third and fourth stages of development, when the water cut may grow but fail to reach the expected stabilization asymptote, thereby bringing the issue of economic feasibility of further operation into discussion. Efforts to solve these problems through the conventional techniques of cyclic injection (huff ‘n’ puff process), inflow/conformance control, filtration flow modification, and polymer flooding are generally unsuccessful.\u0000 The paper reviews information on methods of steadying oil production, reducing water cut and preventing its growth, as well as on a set of measures to improve the efficiency of developing the Zarechnoye field in the Republic of Tatarstan.","PeriodicalId":380218,"journal":{"name":"Day 3 Thu, November 17, 2022","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127896732","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}