2022 Vol. 39, No. 1

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2022, 39(1): 1-2.
Abstract(453) HTML (268) PDF (823KB)(23)
Abstract:
DRILLING FLUID
Effect of Water on BaSO4 Particles/GTL Suspensions
ZHANG Xuemei, ZHANG Guilei, GUO Xiaoxuan, GENG Tie, LI Bin, FENG Zongtao, SUN Dejun
2022, 39(1): 1-7. doi: 10.12358/j.issn.1001-5620.2022.01.001
Abstract(895) HTML (386) PDF (2626KB)(81) [Cited by] (1)
Abstract:
The dispersion state of weight material has a great effect on the rheology of oil based drilling fluids. In laboratory experiment, the effects of water on the settling stability and the viscosity of the suspension were studied. The suspension used in the experiments was formulated with fatty alcohol...
Study on Rheological Modifier of High Temperature High Density Clay-free Oil-based Drilling Fluid
SHI He, SHI Haimin, NI Xiaoxiao, CHENG Rongchao, ZHANG Jiaqi, WANG Jianhua, YAN Lili
2022, 39(1): 8-14. doi: 10.12358/j.issn.1001-5620.2022.01.002
Abstract(1110) HTML (414) PDF (2436KB)(106) [Cited by] (6)
Abstract:
Aiming at the problem of insufficient settlement stability of oil-based drilling fluids in high temperature environments, a small molecule fatty acid amide type rheological modifier FAA which can be used in high temperature environment was synthesized by reacting dimer fatty acids and diethylene tri...
Mechanisms of Oleamide as Thinner in Oil Based Drilling Fluids
WANG Jing, ZHANG Shuncong, LI Changling, SHU Jia, ZHONG Dehua, LU Fuwei
2022, 39(1): 15-22. doi: 10.12358/j.issn.1001-5620.2022.01.003
Abstract(1206) HTML (468) PDF (2635KB)(111) [Cited by] (4)
Abstract:
In laboratory experiment, different types of clay were added to a base mud to investigate the effect of formation clays on the viscosity of the base mud, and an asphalt filter loss reducer was added to a base mud at different concentrations to investigate the effect of asphalt on the viscosity of th...
Effects of the Molecular Structure of Block Polymer Developed through RAFT Polymerization on Filtration Property of Drilling Fluids
YANG Lili, WANG Aijia, JIANG Guancheng, AO Tian, ZHAO Zhengguo, TANG Runping
2022, 39(1): 23-28. doi: 10.12358/j.issn.1001-5620.2022.01.004
Abstract(928) HTML (375) PDF (2360KB)(64) [Cited by] (3)
Abstract:
A series of isomeric zwitterionic filter loss reducers have been developed for investigating the effects of the molecular structure of polymers on their filtration control performance. These isomeric zwitterionic filter loss reducers were synthesized through reversible addition-fragmentation chain t...
Study on Mechanisms of Carbon Nanotube as a Nanosized Plugging Agent in Water Based Drilling Fluids
CHEN Lili, GUO Jianhua, XIE Gang
2022, 39(1): 29-35. doi: 10.12358/j.issn.1001-5620.2022.01.005
Abstract(983) HTML (384) PDF (2384KB)(63) [Cited by] (6)
Abstract:
Micron-scale plugging agents are unable to effectively plug the nanosized fractures. To overcome this problem, aminated multi-walled carbon nanotubes were selected as the nanosized plugging agent. The effects of the aminated multi-walled carbon nanotubes on the rheology of drilling fluids were studi...
Viscoelasticity of Polymers and Carrying Capacity of Drilling Fluids When Sidetracking through Surface Casing
FU Jianmin, ZHANG Peng, GUO Lei, PENG Sanbing
2022, 39(1): 36-40. doi: 10.12358/j.issn.1001-5620.2022.01.006
Abstract(739) HTML (365) PDF (37905KB)(52)
Abstract:
Through-casing sidetracking is one of the important technical methods for production and efficiency enhancement. When opening windows on the walls a several layers of casing strings, large quantities of iron fillings are produced, imposing a challenge to the hole cleaning capacity of the drilling fl...
Research on Preparation Technology of Temperature-Controlled Expansion Plugging Agent Based on Shape Memory Polymer
WANG Baotian, YANG Qianyun, YANG Hua
2022, 39(1): 41-45. doi: 10.12358/j.issn.1001-5620.2022.01.007
Abstract(911) HTML (365) PDF (2121KB)(66) [Cited by] (11)
Abstract:
A kind of temperature-controlled expansion plugging agent based on temperature-triggered shape-memory material is prepared to achieve expansion bridging in fractured stratum after the temperature reaches the excitation temperature point. This paper discusses the preparation technology of the tempera...
Study and Application of a High Efficiency Liquid Pipe Freeing Agent in Pakistan
LI Wei, JI Yongzhong, YANG Gang, LI Ling, CHEN Wenbo
2022, 39(1): 46-52. doi: 10.12358/j.issn.1001-5620.2022.01.008
Abstract(701) HTML (338) PDF (2551KB)(46) [Cited by] (3)
Abstract:
Black Magic is a widely used pipe freeing agent in Pakistan. Problems existed with the use of this pipe freeing agent include long time of preparation, weighting agents in the pipe freeing slurry which are easy to settle, poor compatibility of the Black Magic with drilling fluids used and low succes...
Study and Treatment on Carbonate/Bicarbonate Pollution in Shale Gas Wells in Sichuan
LI Wentao
2022, 39(1): 53-58. doi: 10.12358/j.issn.1001-5620.2022.01.009
Abstract(939) HTML (374) PDF (2091KB)(111) [Cited by] (4)
Abstract:
Shale gas drilling in Sichuan basin is moving from the block Wei-202 to block Wei-204, where the water based drilling fluids used in the second interval were generally contaminated with CO32- and HCO3-. The source of the contamination is the Changxing, Longtan and Maokou formations. Contamination of...
CEMENTING FLUID
Development of Strength of Set Aluminate Cement in Liquid and Gaseous CO2 Environment
FAN Baitao, WU Zhiqiang, ZHANG Dangsheng
2022, 39(1): 59-64. doi: 10.12358/j.issn.1001-5620.2022.01.010
Abstract(811) HTML (371) PDF (2411KB)(56) [Cited by] (3)
Abstract:
In in-situ combustion operation, the set cement has to experience temperatures up to 500 ℃, under which the silicate cement is unable to retain its stability, and large amount of corrosive gas will be produced in the wellbore. To deal with these problems, the calcium aluminate cement (CAC) modified ...
Application of Autonomous Healing Cement Slurry System in Sichuan
YANG Bingxiang, LIU Haoya, WEI Haoguang, ZENG Min, HE Shiming
2022, 39(1): 65-70. doi: 10.12358/j.issn.1001-5620.2022.01.011
Abstract(911) HTML (314) PDF (2696KB)(64) [Cited by] (4)
Abstract:
Aiming at the problem of damage effect of cementing isolation caused by formation of crack in cement sheath during the development of oil and gas wells, the hydrocarbon-triggered swelling polymer was used as self-healing particles to form an autonomous healing cement slurry system. The experimental ...
Research on A New Material to Prevent the Strength Decline of Set Cement Under Ultra-High Temperature
ZHOU Chongfeng, FEI Zhongming, LI Dewei, ZHAO Jiangbo, JIANG Shiwei, LIU Huiting, XU Ming
2022, 39(1): 71-75. doi: 10.12358/j.issn.1001-5620.2022.01.012
Abstract(771) HTML (301) PDF (2454KB)(58) [Cited by] (12)
Abstract:
In wells with bottomhole temperatures of 200 ℃ or higher, the strength of the set cement with sand will inevitably decrease with time, causing the zonal isolation by the cement sheaths to fail. Wells with this kind of problem will not be able to produce for the designed long time. Researches have be...
Study on Thermally Viscosifying Copolymer as a High Temperature Stabilizer for High Density Cement Slurries
LI Xiaolin, LI Jianhua, YANG Hongbin, LIU Wenming, QI Ben, LI Zhe, YU Jingyu
2022, 39(1): 76-81. doi: 10.12358/j.issn.1001-5620.2022.01.013
Abstract(823) HTML (358) PDF (2813KB)(50) [Cited by] (5)
Abstract:
To dela with the loss of settling stability of cement slurries at elevated temperatures, a high temperature high density cement slurry stabilizer based on a thermally viscosifying copolymer was developed. A new hydrophobic monomer was introduced into the molecule of the thermally viscosifying copoly...
A High Efficiency Oil Wash Spacer for Shale Gas Wells in Changning Oilfield
TU Siqi, XIE Feiyan, AO Kangwei, ZHANG Tianyi, ZHEN Keli
2022, 39(1): 82-86. doi: 10.12358/j.issn.1001-5620.2022.01.014
Abstract(1134) HTML (459) PDF (2240KB)(50) [Cited by] (5)
Abstract:
The oil based drilling fluids used in horizontal drilling of shale gas wells in Changning oilfield are poorly compatible with the cement slurries, resulting in the mixture of the drilling fluid and cement slurry flocculated and difficult to displace from the annular spaces. To solve this problem, an...
The Technology of Interval Push Clay-Cement Slurry to Lost Circulation in Water Bearing Formation
ZHANG Dongqing
2022, 39(1): 87-91. doi: 10.12358/j.issn.1001-5620.2022.01.015
Abstract(936) HTML (370) PDF (2181KB)(42) [Cited by] (2)
Abstract:
Drilling into formations containing flow water is always accompanied with severe mud losses, and conventional mud loss control methods are seldom succeeded in controlling this kind of mud losses. To control this kind of mud losses, a bentonite cement slurry lost circulation material (LCM) was develo...
ACIDIZING FLUID & FRACTURING FLUID
Preparation and Performance Study of an Adsorptive Retardant for Acid Job
LIU Jing, YU Yangyang, YU Menghong, ZHANG Xia, SONG Xianmin, QUAN Hongping, LIU Yi
2022, 39(1): 92-99. doi: 10.12358/j.issn.1001-5620.2022.01.016
Abstract(1070) HTML (298) PDF (3012KB)(33) [Cited by] (3)
Abstract:
Acid job has long been faced with a series of problems such as fast acid – rock reaction, difficulties in flowing back the residue acids as well as high secondary formation damage etc. To deal with these problems, an adsorptive retardant for acid job was developed through emulsion polymerization wit...
Study on Relationship between Rheology of HPAM Solution and Friction Reduction
GAO Hang, FANG Bo, XU Ke, LU Yongjun, YU Luyao, LIU Boxiang
2022, 39(1): 100-106. doi: 10.12358/j.issn.1001-5620.2022.01.017
Abstract(648) HTML (282) PDF (3046KB)(37) [Cited by] (4)
Abstract:
An equation describing the friction of polymer solutions was developed through the studies on the rheology and friction of HPAM solutions of different concentrations and molecular weights of HPAM. HPAM solutions formulated with five different HPAM concentrations and HPAM with four different molecula...
Preparation of a High Molecular Weight Polymer Thickening Agent and Its Use in Fracturing Fluids
YAN Jie, ZHANG Han, GUO Zhijie, MA Guangdong, HUO Jinhua
2022, 39(1): 107-113. doi: 10.12358/j.issn.1001-5620.2022.01.018
Abstract(1050) HTML (416) PDF (3984KB)(38) [Cited by] (9)
Abstract:
A high molecular weight polymer thickening agent, FTW-1, for fracturing fluids has been developed through water solution polymerization using 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylamide (AM), sodium p-styrenesulfonate (SSS) and dimethyl diallyl ammonium chloride (DMDAAC) as polymer...
Study and Application of Self-diverting Fracturing Fluid Containing Highly Deformable Temporary Plugging Agents
LIU Yi, YANG Hui, WU Zuohao
2022, 39(1): 114-120. doi: 10.12358/j.issn.1001-5620.2022.01.019
Abstract(844) HTML (294) PDF (3805KB)(45) [Cited by] (7)
Abstract:
The natural fractures abundantly developed in the pyroclastic rocks in the Nanpu No. x structure are conducive to the construction of complex fractures and the improvement of the effect of stimulated reservoir volume fracturing. In previous self-diverting temporary plugging fracturing operation, the...
Research and Application of Fracturing Flowback Fluid Reuse Technology in Sulige Gas Field
LI Bin
2022, 39(1): 121-125. doi: 10.12358/j.issn.1001-5620.2022.01.020
Abstract(881) HTML (329) PDF (2316KB)(55) [Cited by] (4)
Abstract:
According to the characteristics of fracturing flowback fluid in Sulige gas field and the water quality requirement of treated flowback fluid used to prepare fracturing fluid, a series of treatment processes including pretreatment, coagulation & sedimentation, double filtration and sterilization...
COMPLETION FLUID
Experimental Research on Prediction and Prevention of Scaling in Lingshui 25-1 Gas Reservoir
LIU Zhengkai, QIU Zhengsong, LI Jia, XING Xijin, HE Song, GAO Jian
2022, 39(1): 126-132. doi: 10.12358/j.issn.1001-5620.2022.01.021
Abstract(694) HTML (302) PDF (2688KB)(46) [Cited by] (4)
Abstract:
In order to solve the prominent problems of high salinity and serious scaling of formation water in Lingshui 25-1 gas field, through the scaling trend calculation and experimental evaluation, the scaling risk of Lingshui 25-1 gas field is analyzed, the quantitative evaluation indexes of scaling degr...

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