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Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes /issues, but are citable by Digital Object Identifier (DOI).
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Advances in Deepwater Drilling and Completion Fluid Technology at Domestic and Abroad
Geng Tie, Yang Jie
Accepted Manuscript Available online  2025-04-19 09:48
Abstract(33) HTML(26) PDF (2078KB)(3)
Abstract:
Global deepwater and ultra-deepwater oil and gas resources account for 44% of total reserves, making their development a crucial pillar of energy supply. In recent years, 70% of major new oil and gas discoveries worldwide have originated from deepwater areas. The South China Sea holds abundant deepw...
Preparation of Environmentally Friendly Nano Lithium Magnesium Silicate-Cellulose-Gelatin Composite Gel and Study on its Ability to Control Mud Losses
FAN Yu, TANG Yijia, XIA Lianbin, WANG Rui, HUANG Tao, WANG Jianwei
Accepted Manuscript Available online  2025-04-18 17:55,  doi: 10.12358/j.issn.1001-5620.2025.02.008
Abstract(58) HTML(23) PDF (4143KB)(4)
Abstract:
In the context of the global oil exploration and development in the strict implementation of environmental protection regulations, the development of an environmentally friendly and excellent performance of the plugging agent is undoubtedly a highly effective solution to deal with the leakage of dri...
Castor Oil-Based Environmentally Friendly Waterborne Polyurethane Filming Agent CWPU
XIAO Fengfeng, YANG Lili, WU Jiale, FENG Shangjiang, QIU Shixin, JIANG Guancheng
Accepted Manuscript Available online  2025-04-18 17:55,  doi: 10.12358/j.issn.1001-5620.2025.02.007
Abstract(139) HTML(80) PDF (3794KB)(7)
Abstract:
In the exploration of oil and gas resources, low-permeability oil and gas reservoirs are easily damaged and are difficult to recover. This problem has become more and more serious. The development of filming agents can help solve this problem, however, the raw materials currently used for the synthe...
Preparation and Evaluation of a Drilling Fluid Plugging Agent Used in Ultra-Low Temperature Environment in Antarctic Region
ZHANG Guangsheng, LYU Kaihe, SUN Jinsheng, LIU Jingping, SUN Yuanwei, HUANG Ning, YI Haijiang
Accepted Manuscript Available online  2025-04-18 17:54,  doi: 10.12358/j.issn.1001-5620.2025.02.006
Abstract(50) HTML(16) PDF (2566KB)(4)
Abstract:
An organic/inorganic hybrid plugging agent GSF has been developed for dealing with the borehole wall destabilization problem encountered in drilling the ultra-low temperature rocks interbedded in the icesheets in Antarctic area. GSF was synthesized using inverse emulsification polymerization method ...
Research and Application Status, Existing Problems and Development Suggestions of Drilling Fluid in China
WANG Zhonghua
Accepted Manuscript Available online  2025-04-17 15:18
Abstract(33) HTML(25) PDF (2240KB)(4)
Abstract:
In response to the need for safe, fast, and efficient drilling, a series of research and applications in drilling fluids have been carried out in China in recent years, and new progress has been made.To facilitate a comprehensive understanding of the current status of drilling fluid technology, prom...
Formulation Design of Drilling Fluid Loss Control and Plugging Strategies in Deepwater Subsalt Reservoirs
Xu Chengyuan, Zhong Jiangcheng, Zhu Haifeng, Xiang Ming, Lin Zhiqiang, Yang Jie, Chen Jiaxu
Accepted Manuscript Available online  2025-04-17 15:14
Abstract(39) HTML(32) PDF (5300KB)(4)
Abstract:
Subsalt oil and gas resources are abundant worldwide, with significant reserves located in the deepwater offshore regions of Brazil. The Mero field is a typical example of deepwater subsalt oil and gas resources, located in the southeastern Santos Basin offshore Brazil. The reservoir depth exceeds 5...
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FORUM
The Status-Quo of the Application and Research and Prospect of Oil and Gas Large Model in Well Drilling and Completion Industry
WU Yaohui, LIU Meiquan, LI Xuesong, LIU Changyue
2025, 42(2): 143-154.   doi: 10.12358/j.issn.1001-5620.2025.02.001
Abstract(114) HTML(44) PDF (4131KB)(48)
Abstract:
Represented by industrial large models, artificial intelligence (AI) technology plays an important role in oil and gas exploration and development. AI not only can effectively reduce costs and improve efficiency, but also opens an important way to pr...
DRILLING FLUID
Drilling fluid technology for deep subsurface Tako-1 well
SUN Jinsheng, WANG Jianhua
2025, 42(2): 155-166.   doi: 10.12358/j.issn.1001-5620.2025.02.002
Abstract(124) HTML(33) PDF (5900KB)(70)
Abstract:
The drilling process of deep-earth Tako-1 well is confronted with a series of extreme conditions such as ultra-high temperature, ultra-high pressure and ultra-high salt. These complex conditions bring great challenges to drilling fluid technology. As...
The Dynamic Response Characteristics of Ballooning Effect in Deep Fractured High Temperature High Pressure Formations in Deep Water Drilling
WU Yanhui, HUANG Honglin, LUO Ming, LI Wentuo, MA Chuanhua, DAI Rui, LI Jun
2025, 42(2): 167-179.   doi: 10.12358/j.issn.1001-5620.2025.02.003
Abstract(98) HTML(37) PDF (4546KB)(27)
Abstract:
Deep formations in deep water area are developed with fractures and fissures, fluctuations in wellbore pressure during drilling can easily induce ballooning effect which is made complex by the high temperature high pressure (HTHP) downhole environmen...
Drilling Fluid Technology for the Deepest Vertical Well in Asia – The Ultra-Deep Well Pengshen-6
XU Yi, HE Tao, WANG Jun, OU Meng, YAN Fushou, ZHOU Huaan, HUANG Xuyao
2025, 42(2): 180-186.   doi: 10.12358/j.issn.1001-5620.2025.02.004
Abstract(96) HTML(30) PDF (2066KB)(47)
Abstract:
Well Pengshen-6, a six-interval well with a total depth of 9,026 m, is a key exploration well deployed by the PetroChina Southwest Oil & Gasfield Company. The projected reservoir is mainly the Dengying Formation in the Sinian System. The main tec...
Mechanisms of Water Block Damage of High Temperature Reservoirs Based on In-situ Characterization of Wettability and Subcritical Water Characteristics
SHAN Kai, QIU Zhengsong, CHENG Zheng, YANG Mengtao, LI Kai, ZHONG Hanyi, REN Xiaoxia
2025, 42(2): 187-194.   doi: 10.12358/j.issn.1001-5620.2025.02.005
Abstract(85) HTML(27) PDF (4011KB)(23)
Abstract:
Study on the in-situ wettability of deep reservoir rocks is of great importance to the in-depth understanding of the mechanisms with which a high temperature reservoir is damaged by water block and to the establishment of efficient measures for water...
Study on Wellbore Instability Mechanism of Continental Shale Reservoir in Northeastern Sichuan Basin
GAO Shuyang, BO Kehao, ZHANG Yayun, GAO Hong, HUANGFU Jinglong
2025, 42(2): 217-224.   doi: 10.12358/j.issn.1001-5620.2025.02.009
Abstract(84) HTML(29) PDF (2755KB)(43)
Abstract:
Shale reservoirs in the Qianfoya continental facies shale reservoirs in northeastern Sichuan collapsed seriously, leading to severe difficulties in drilling a well successfully. To deal with this problem, a systematic analysis of instability characte...
High Plugging Capacity Drilling Fluid Technology for Deep Buried Coal-Bed Methane Drilling in Jizhong Area
LUO Yucai, YU Huamin, SUN Hao, YU Jiantao, FENG Dan, LIU Fei
2025, 42(2): 225-232.   doi: 10.12358/j.issn.1001-5620.2025.02.010
Abstract(66) HTML(17) PDF (3188KB)(40)
Abstract:
Horizontal drilling of deep buried coal-bed methane in Jizhong area has been faced with several difficulties and challenges such as quite limited data for reference, many geologic uncertainties, thin coal-bed layers which are easy to collapse and hav...
Methods of Measuring Formate Content in Drilling Fluids
ZHANG Xiaoguang, YANG Junzhen, WANG Ping, LI Bin, LI Huimin, CHEN Leixu, ZHANG Lingying
2025, 42(2): 233-238.   doi: 10.12358/j.issn.1001-5620.2025.02.011
Abstract(70) HTML(22) PDF (2126KB)(31)
Abstract:
In studying the standards concerning sodium formate and potassium formate as drilling fluid additives, the major problems existed in and factors affecting the measurement of the concentrations of formates were analyzed, and a best detection method wa...
CEMENTING FLUID
The Toughening Mechanisms of Tough Cement Slurries for the Underground Gas Storage in North China
LI Lichang, CAO Hongchang, GAO Yang, LIU Jingli, MA Jun, HUANG Jian, LIU Junhua, SUN Wenzhao
2025, 42(2): 239-246.   doi: 10.12358/j.issn.1001-5620.2025.02.012
Abstract(66) HTML(30) PDF (3064KB)(26)
Abstract:
As the important engineering of China’s “energy resource supply guarantee”, underground gas storage (UGS) has three functions, which are seasonal peak shaving, emergency response to accidents and national energy strategic reserve. The formations into...
Thermal Damage of Set Silicate Cement in Ultra-High Temperature Xerothermic Environment
LI Xiaojiang, WANG Yueyang, XIAO Jingnan, WEI Haoguang, YANG Ruiyue
2025, 42(2): 247-254.   doi: 10.12358/j.issn.1001-5620.2025.02.013
Abstract(58) HTML(16) PDF (2943KB)(21)
Abstract:
In coal gasification and shale gas in-situ development, the bottoms of the wellbores are in an ultra-high temperature xerothermic environment, which is of great challenge to the thermal stability of the cement sheaths. To deal with this challenge, th...
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Synthesis and Evaluation of A Primary Emulsifier for High Temperature Oil Base Drilling Fluid
QIN Yong, JIANG Guancheng, DENG Zhengqiang, GE Lian
2016, 33(1): 6-10.   doi: 10.3969/j.issn.1001-5620.2016.01.002
[Abstract](2703) [PDF 4926KB](681)
摘要:
以妥尔油脂肪酸和马来酸酐为主要原料合成了一种油基钻井液抗高温主乳化剂HT-MUL,并确定了妥尔油脂肪酸单体的最佳酸值及马来酸酐单体的最优加量。对HT-MUL进行了单剂评价,结果表明HT-MUL的乳化能力良好,配制的油水比为60:40的油包水乳液的破乳电压最高可达490 V,90:10的乳液破乳电压最高可达1000 V。从抗温性、滤失性、乳化率方面对HT-MUL和国内外同类产品进行了对比,结果表明HT-MUL配制的乳液破乳电压更大、滤失量更小、乳化率更高,整体性能优于国内外同类产品。应用主乳化剂HT-MUL配制了高密度的油基钻井液,其性能评价表明体系的基本性能良好,在220℃高温热滚后、破乳电压高达800 V,滤失量低于5 mL。HT-MUL配制的油基钻井液具有良好的抗高温性和乳化稳定性。
Status Quo of Water Base Drilling Fluid Technology for Shale Gas Drilling in China and Abroad and Its Developing Trend in China
SUN Jinsheng, LIU Jingping, YAN Lili
2016, 33(5): 1-8.   doi: 10.3969/j.issn.1001-5620.2016.05.001
[Abstract](2209) [PDF 1051KB](1184)
摘要:
综述了国内外页岩气井井壁失稳机理、稳定井壁主要方法及水基钻井液技术研究与应用现状,讨论了当前中国页岩气井钻井液技术面临的主要技术难题,分析了美国页岩气井与中国主要页岩气产区井壁失稳机理的差异,指出了中国页岩气井水基钻井液技术研究存在的误区与不足,提出了中国页岩气井水基钻井液技术发展方向。
Progress Made and Trend of Development in Studying on Temporarily Type Plugging Reservoir Protection Drilling Fluids
JIANG Guancheng, MAO Yuncai, ZHOU Baoyi, SONG Ranran
2018, 35(2): 1-16.   doi: 10.3969/j.issn.1001-5620.2018.02.001
[Abstract](1594) [PDF 4562KB](469)
摘要:
通常在勘探开发油气过程中会发生不同程度的油气层损害,导致产量下降、甚至"枪毙"油气层等,钻井液是第一个与油气层相接触的外来流体,引起的油气层损害程度往往较大。为减轻或避免钻井液导致的油气层损害、提高单井产量,国内外学者们进行了长达半个世纪以上的研究工作,先后建立了"屏蔽暂堵、精细暂堵、物理化学膜暂堵"三代暂堵型保护油气层钻井液技术,使保护油气层效果逐步提高,经济效益明显。但是,与石油工程师们追求的"超低"损害目标仍存在一定差距,特别是随着非常规、复杂、超深层、超深水等类型油气层勘探开发力度的加大,以前的保护技术难以满足要求。为此,将仿生学引入保护油气层钻井液理论中,发展了适合不同油气层渗透率大小的"超双疏、生物膜、协同增效"仿生技术,并在各大油田得到推广应用,达到了"超低"损害目标,标志着第四代暂堵型保护油气层钻井液技术的建立。对上述4代暂堵型保护油气层技术的理论基础、实施方案、室内评价、现场应用效果与优缺点等进行了论述,并通过梳理阐明了将来的研究方向与发展趋势,对现场技术人员和科技工作者具有较大指导意义。
Preparation and Characteristics of Nano Polymer Microspheres Used as Plugging Agent in Drilling Fluid
WANG Weiji, QIU Zhengsong, HUANG Wei'an, ZHONG Hanyi, BAO Dan
2016, 33(1): 33-36.   doi: 10.3969/j.issn.1001-5620.2016.01.007
[Abstract](1443) [PDF 2843KB](272)
摘要:
页岩具有极低的渗透率和极小的孔喉尺寸,传统封堵剂难以在页岩表面形成有效的泥饼,只有纳米级颗粒才能封堵页岩的孔喉,阻止液相侵入地层,维持井壁稳定,保护储层。以苯乙烯(St)、甲基丙烯酸甲酯(MMA)为单体,过硫酸钾(KPS)为引发剂,采用乳液聚合法制备了纳米聚合物微球封堵剂SD-seal。通过红外光谱、透射电镜、热重分析和激光粒度分析对产物进行了表征,通过龙马溪组岩样的压力传递实验研究了其封堵性能。结果表明,SD-seal纳米粒子分散性好,形状规则(基本为球形),粒度较均匀(20 nm左右),分解温度高达402.5℃,热稳定性好,阻缓压力传递效果显著,使龙马溪组页岩岩心渗透率降低95%。
Experimental Study on Airtightness of Cement Sheath Under Alternating Stress
LIU Rengguang, ZHANG Linhai, TAO Qian, ZHOU Shiming, DING Shidong
2016, 33(4): 74-78.   doi: 10.3969/j.issn.1001-5620.2016.04.015
[Abstract](1080) [PDF 2049KB](199)
摘要:
利用自主研发的水泥环密封性实验装置研究了套管内加卸压循环作用下水泥环的密封性,根据实验结果得出了循环应力作用下水泥环密封性失效的机理。实验结果显示,在较低套管内压循环作用下,水泥环保持密封性所能承受的应力循环次数较多;在较高循环应力作用下,水泥环密封性失效时循环次数较少。表明在套管内较低压力作用下,水泥环所受的应力较低,应力水平处于弹性状态,在加卸载的循环作用下,水泥环可随之弹性变形和弹性恢复;在较高应力作用下,水泥环内部固有的微裂纹和缺陷逐渐扩展和连通,除了发生弹性变形还产生了塑性变形;随着应力循环次数的增加,塑性变形也不断地累积。循环压力卸载时,套管弹性回缩而水泥环塑性变形不可完全恢复,2者在界面处的变形不协调而引起拉应力。当拉应力超过界面处的胶结强度时出现微环隙,导致水泥环密封性失效,水泥环发生循环应力作用的低周期密封性疲劳破坏。套管内压力越大,水泥环中产生的应力水平越高,产生的塑性变形越大,每次卸载时产生的残余应变和界面处拉应力也越大,因此引起密封性失效的应力循环次数越少。
Progresses in Studying Drilling Fluid Nano Material Plugging Agents
MA Chengyun, SONG Bitao, XU Tongtai, PENG Fangfang, SONG Taotao, LIU Zuoming
2017, 34(1): 1-8.   doi: 10.3969/j.issn.1001-5620.2017.01.001
[Abstract](2408) [PDF 2528KB](793)
摘要:
分析了硬脆性泥页岩井壁失稳的原因,介绍了纳米材料特点及其应用,并概述了国内外钻井液用纳米封堵剂的研究进展,包括有机纳米封堵剂、无机纳米封堵剂、有机/无机纳米封堵剂,以及纳米封堵剂现场应用案例。笔者认为:利用无机纳米材料刚性特征以及有机聚合物可任意变形、支化成膜等特性,形成的一种核壳结构的无机/聚合物类纳米封堵剂,能够很好地分散到钻井液中,且对钻井液黏度和切力影响较小,这种类型的纳米封堵剂能够在低浓度下封堵泥页岩孔喉,建立一种疏水型且具有一定强度的泥页岩人工井壁,这不仅能够阻止钻井液侵入,而且还能提高地层承压能力,无机纳米材料与有机聚合物的结合是未来钻井液防塌剂的发展方向。
Effect of Retained Fracturing Fluid on the Imbibition Oil Displacement Effciency of Tight Oil Reservoir
GUO Gang, XUE Xiaojia, LI Kai, FAN Huabo, LIU Jin, WU Jiang
2016, 33(6): 121-126.   doi: 10.3969/j.issn.1001-5620.2016.06.022
[Abstract](1260) [PDF 11047KB](227)
摘要:
统计长庆油田罗*区块2015年存地液量与油井一年累积产量的关系发现,存地液量越大,一年累积产量越高,与常规的返排率越高产量越高概念恰恰相反,可能与存地液的自发渗吸替油有关。核磁实验结果表明,渗吸替油不同于驱替作用,渗吸过程中小孔隙对采出程度贡献大,而驱替过程中大孔隙对采出程度贡献大,但从现场致密储层岩心孔隙度来看,储层驱替效果明显弱于渗吸效果。通过实验研究了影响自发渗吸效率因素,探索影响压裂液油水置换的关键影响因素,得出了最佳渗吸采出率及最大渗吸速度现场参数。结果表明,各参数对渗吸速度的影响顺序为:界面张力 > 渗透率 > 原油黏度 > 矿化度,岩心渗透率越大,渗吸采收率越大,但是增幅逐渐减小;原油黏度越小,渗吸采收率越大;渗吸液矿化度越大,渗吸采收率越大;当渗吸液中助排剂浓度在0.005%~5%,即界面张力在0.316~10.815 mN/m范围内时,浓度为0.5%(界面张力为0.869 mN/m)的渗吸液可以使渗吸采收率达到最大。静态渗吸结果表明:并不是界面张力越低,采收率越高,而是存在某一最佳界面张力,使地层中被绕流油的数量减少,渗吸采收率达到最高,为油田提高致密储层采收率提供实验指导。
High Performance Water Base Drilling Fluid for Shale Gas Drilling
LONG Daqing, FAN Xiangsheng, WANG Kun, FAN Jianguo, LUO Renwen
2016, 33(1): 17-21.   doi: 10.3969/j.issn.1001-5620.2016.01.004
[Abstract](1662) [PDF 540KB](330)
摘要:
目前中国页岩气水平井定向段及水平段钻井均使用油基钻井液,但油基岩屑处理费用昂贵,急需开发和应用一种具有环境保护特性的高性能水基钻井液体系。介绍了2种高性能水基钻井液体系的室内实验和现场试验效果。在长宁H9-4井水平段、长宁H9-3和长宁H9-5井定向至完井段试验了GOF高性能水基钻井液体系,该体系采用的是聚合物封堵抑制方案,完全采用水基润滑方式;在昭通区块YS108H4-2井水平段试验了高润强抑制性水基钻井液体系,该体系采用的是有机、无机盐复合防膨方案以及润滑剂与柴油复合润滑方式。现场应用表明,定向段机械钻速提高50%~75%,水平段机械钻速提高75%~100%。通过实验数据及现场使用情况,对比分析了2种体系的优劣,找出了他们各自存在的问题,并提出了改进的思路,为高性能水基钻井液的进一步完善提供一些经验。
Progress in the Study of Environmentally Friendly Drilling Fluid Filtration Reducer
WU Xinlei, YAN Lili, WANG Lihui, WANG Fayun
2018, 35(3): 8-16.   doi: 10.3969/j.issn.1001-5620.2018.03.002
[Abstract](1258) [PDF 851KB](277)
摘要:
解决环境污染问题是改善钻井液的关键,开发环保型抗高温降滤失剂是当前研究的重要领域之一。概述了国内外环保型降滤失剂的研究进展,对国内外在环保型降滤失剂研制中所使用的原材料及产品性能,以及中国抗温改性天然高分子降滤失剂的发展近况进行了介绍。天然高分子降滤失剂是通过对淀粉、纤维素及木质素等天然高分子材料进行改性以提高其抗温、抗盐能力,使其可以应用于井温更高的深井钻探中。目前,中国环保型降滤失剂普遍可以应用到150℃的高温中,部分抗温能力可达到180℃却未能推广使用。通过对现有降滤失剂的研究,分析其抗高温的作用机理,探寻能有效提高抗温能力的单体分子结构及发挥作用的功能基团,例如磺酸基团、内酰胺基团等,以期对环保型抗高温降滤失剂的研制起到一定的指导和参考作用,加快环保型抗高温降滤失剂的发展。
Borehole Wall Collapse and Control in Shale Gas Well Drilling
LIU Jingping, SUN Jinsheng
2016, 33(3): 25-29.   doi: 10.3969/j.issn.1001-5620.2016.03.005
[Abstract](1025) [PDF 7874KB](250)
摘要:
页岩气井水平井段井壁失稳是目前中国页岩气资源勘探开发的关键技术难题。通过云南昭通108区块龙马溪组页岩的X-射线衍射分析、扫描电镜(SEM)观察、力学特性分析、润湿性、膨胀率及回收率等实验,研究了其矿物组成、微观组构特征、表面性能、膨胀和分散特性,揭示了云南昭通108区块龙马溪组页岩地层井壁水化失稳机理。该地层黏土矿物以伊利石为主要组分,不含蒙脱石及伊蒙混层,表面水化是引起页岩地层井壁失稳的主要原因。基于热力学第二定律,利用降低页岩表面自由能以抑制页岩表面水化的原理,建立了通过多碳醇吸附作用改变页岩润湿性,有效降低其表面自由能、抑制表面水化,进而显著抑制页岩水化膨胀和分散的稳定井壁方法。
Dissolution of Barite Filter Cake Using Chelating Agents: A review of Mechanisms, Diagnosis and Removal Strategies
WEI Zhongjin, ZHOU Fengshan, XU Tongtai
2020, 37(6): 685-693.   doi: 10.3969/j.issn.1001-5620.2020.06.002
[Abstract](6737) [PDF 5710KB](4373)
Abstract:
As a weighting agent of drilling fluid, barite is easy to migrate, transform and precipitate in the reservoir to form acid insoluble barite mud cake, which causes serious damage to oil and gas reservoir. Therefore, it is necessary to remove the blockage of barite safely and reliably. However, many r...
Status Quo of Water Base Drilling Fluid Technology for Shale Gas Drilling in China and Abroad and Its Developing Trend in China
SUN Jinsheng, LIU Jingping, YAN Lili
2016, 33(5): 1-8.   doi: 10.3969/j.issn.1001-5620.2016.05.001
[Abstract](2206) [PDF 1051KB](462)
Abstract:
This paper summarizes the studies and applications of the mechanism of borehole collapse, the main methods used for stabilizing instable borehol, and the status quo of water base drilling fluid technology, discusses the major difficulties presently faced in shale gas drilling in China, analyzes the ...
Status Quo of Methods for Evaluating Filtration Performance and Mud Cake Quality of Drilling Fluid
YAO Rugang, ZHANG Zhenhua, PENG Chunyao, FENG Yanyun, DING Guangbo
2016, 33(6): 1-9.   doi: 10.3969/j.issn.1001-5620.2016.06.001
[Abstract](1565) [PDF 2116KB](827)
Abstract:
This paper discusses the instruments and procedures available presently for evaluating fltration property, sizes of pore throats, thickness and compressibility of mud cake. Analyzed in this paper are the status quo of using SEM and energy spectrum in studying the microstructure of mud cake and the d...
Progresses in Studying Drilling Fluid Nano Material Plugging Agents
MA Chengyun, SONG Bitao, XU Tongtai, PENG Fangfang, SONG Taotao, LIU Zuoming
2017, 34(1): 1-8.   doi: 10.3969/j.issn.1001-5620.2017.01.001
[Abstract](2406) [PDF 2528KB](465)
Abstract:
This paper analyzes the mechanisms under which the hard and brittle shale formations destabilize, introduces the characteristics and application of nano materials, and summarizes the progresses made in the studies of drilling fluid nano material plugging agents, including organic and inorganic nano ...
Drilling Fluid Technology for “Three High” Wells in Qaidam Basin in Qinghai
WANG Xin, ZHANG Minli, WANG Qiang, ZHUANG Wei, ZHANG Weijun, WANG Zhibin, LI Yifeng
2016, 33(6): 45-50.   doi: 10.3969/j.issn.1001-5620.2016.06.008
[Abstract](1345) [PDF 729KB](710)
Abstract:
Four blocks in the Qaidam Basin, Niudong, Lenghu, Zahaquan and Yingxi, have formation rocks with complex lithology, such as salt, gypsum, mirabilite, and hard and brittle shales etc. Downhole troubles have been frequently encountered in previous drilling operations. The Niudong nasal structure in th...
Synthesis and Evaluation of A Primary Emulsifier for High Temperature Oil Base Drilling Fluid
QIN Yong, JIANG Guancheng, DENG Zhengqiang, GE Lian
2016, 33(1): 6-10.   doi: 10.3969/j.issn.1001-5620.2016.01.002
[Abstract](2696) [PDF 4926KB](728)
Abstract:
A primary emulsifier, HT-MUL, for high temperature oil base drilling fluid was developed using tall oil fatty acids and maleic anhydride, and the optimum acid value of tall oil fatty acids and optimum concentration of maleic anhydride for the reaction were determined. Evaluation of HT-MUL shows that...
A New Fracturing Fluid with Temperature Resistance of 230℃
YANG Zhenzhou, LIU Fuchen, SONG Lulu, LIN Lijun
2018, 35(1): 101-104.   doi: 10.3969/j.issn.1001-5620.2018.01.019
[Abstract](1712) [PDF 604KB](666)
Abstract:
The natural vegetable gum fracturing fluid presently in use works effectively at temperatures up to 177℃. To fracture formations with higher temperatures, a fracturing fluid with temperature resistance of 200-230℃ has been developed with ultrahigh temperature thickening agent, high temperature resis...
Plugging Micro-fractures to Prevent Gas-cut in Fractured Gas Reservoir Drilling
HAN Zixuan, LIN Yongxue, CHAI Long, LI Daqi
2017, 34(1): 16-22.   doi: 10.3969/j.issn.1001-5620.2017.01.003
[Abstract](1506) [PDF 2831KB](638)
Abstract:
The Ordovician carbonate rock reservoirs drilled in Tazhong area (Tarim Basin) have complex geology and developed fractures, 50% of which with widths between 20 μm and 400 μm. These fractures have led to frequent lost circulation, well kick and severe gas cut, which in turn resulted in well control ...
Development of Extreme Pressure Anti-wear Lubricant MPA for Water Base Drilling Fluids
QU Yuanzhi, HUANG Hongjun, WANG Bo, FENG Xiaohua, SUN Siwei
2018, 35(1): 34-37.   doi: 10.3969/j.issn.1001-5620.2018.01.006
[Abstract](1502) [PDF 963KB](638)
Abstract:
An extreme pressure organic sulfur anti-wear additive has been developed for use in water base drilling fluids. Structural characteristics and extreme pressure anti-wear performance evaluation showed that the organic sulfur compound is a saturated alkane, with sulfur content as high as 35.49%, and h...
Progress in Studying Cement Sheath Failure in Perforated Wells
LI Jin, GONG Ning, LI Zaoyuan, HAN Yaotu, YUAN Weiwei
2016, 33(6): 10-16.   doi: 10.3969/j.issn.1001-5620.2016.06.002
[Abstract](1399) [PDF 2703KB](627)
Abstract:
Perforation well completion is a widely used completion method, and is of great importance to oil and gas well stimulation. With more and more wells completed with perforation, more attentions have been paid to the sealing integrity of cement sheaths after perforation, especially the perforation of ...
Governed by:
China National Petroleum Corporation Ltd
Sponsored by:
CNPC Bohai Drilling Engineering Co. LtdPetroChina Huabei Oilfield Company
Editor-in-Chief:Shi-chun Chen(Engineer Technology Research Institute,BHDC)
Deputy Editor-in-chief:
Gui-juan Wang(Engineer Technology Research Institute,BHDC)Qiang Ren(Engineer Technology Research Institute,BHDC)
Address:
Editorial Office of Drilling Fluid and Completion Fluid, Bohai Drilling Engineering Institute, Yanshan South Road, Renqiu City, Hebei Province
Postcode: 062552
Tel:(0317)2725487 2722354
E-mail: zjyywjy@126.com
   CN   12-1486/TE
ISSN   1001-5620