2023 Vol. 40, No. 4

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DRILLING FLUID
Study on Methods of Gas Hydrate Inhibition and Blockage Treatment Using Seawater Polymer Muds in Deepwater Well Drilling
WU Yanhui, DAI Rui, ZHANG Lei, ZHU Zhiqian, GAO Yu, LIU Kai, XU Peng, ZHANG Yu
2023, 40(4): 415-422. doi: 10.12358/j.issn.1001-5620.2023.04.001
Abstract(867) HTML (317) PDF (2516KB)(161) [Cited by] (3)
Abstract:
The methods of preventing and curing gas hydrate in deepwater drilling are too preservative. In the west of the South China Sea, the gas hydrate inhibitive drilling fluid HEM used in the deepwater drilling is quite expensive and the penetration rate is low. To reduce the mud cost and shorten the dri...
Prediction of Four Kinds of Sensibility Damages to Hydrocarbon Reservoirs Based on Random Forest Algorithm
SHENG Keming, JIANG Guancheng
2023, 40(4): 423-430. doi: 10.12358/j.issn.1001-5620.2023.04.002
Abstract(743) HTML (287) PDF (3412KB)(118) [Cited by] (4)
Abstract:
Many kinds of hydrocarbon reservoir damages with complex mechanisms have been encountered in every phase of oil and gas field exploration and development. Conventional core flow test used in evaluating the sensibility damage of a reservoir can give reliable test results, however, this test is both e...
Research and Application of Dual-protective Oilfield Water Drilling Fluids System Without Solid
LI Sheng
2023, 40(4): 431-437. doi: 10.12358/j.issn.1001-5620.2023.04.003
Abstract(800) HTML (292) PDF (2015KB)(130) [Cited by] (3)
Abstract:
During the development of the carbonate reservoir of the Tahe oilfield, the conventional polysulfonate drilling fluid damages reservoir duo to non-acid-soluble solid phase after loss, and sulfonalized agent does not conform to the concept of green development. The oilfield water is introduced to for...
Mechanisms of Borehole Instability of the Shaximiao Formation in Block Zhongjiang and the Anti-collapse Alkyl Glycoside Drilling Fluid
CHEN Wenke, ZHENG He, GONG Houping, XU Chuntian, CAI Wei, SHI Shuijian, ZHOU Chengyu, BAO Dan
2023, 40(4): 438-445. doi: 10.12358/j.issn.1001-5620.2023.04.004
Abstract(841) HTML (296) PDF (3949KB)(124) [Cited by] (6)
Abstract:
Borehole wall instability has long been a problem encountered in drilling the Shaximiao formation in the block Zhongjiang, western Sichuan. To solve this problem, the claystones from the Shaximiao formation was studied for their mineral composition, microstructure and physical-chemical properties. T...
Study and Application of an Oil-based Gel Fluid for Sealing Induced Micro-fractures
LI Wenzhe, FU Zhi, ZHANG Zhen, LIU Yingmin, WU Shuang
2023, 40(4): 446-452, 461. doi: 10.12358/j.issn.1001-5620.2023.04.005
Abstract(674) HTML (261) PDF (3211KB)(114) [Cited by] (2)
Abstract:
The Longmaxi formation in the Changning block (Sichuan Oilfield) is drilled with oil-based drilling fluids. This formation is developed with microfractures and hence mud losses have frequently happened in the past. Mud losses have been controlled with bridging particles formulated in oil-based slurr...
Development of Ultra-high Temperature Polymer Brush Lubricant for Water Based Drilling Fluids
GAO Chongyang, HUANG Xianbin, BAI Yingrui, SUN Jinsheng, LYU Kaihe, ZHANG Yu, ZONG Jiajiang, LIU Fengbao
2023, 40(4): 453-461. doi: 10.12358/j.issn.1001-5620.2023.04.006
Abstract(853) HTML (313) PDF (2624KB)(139) [Cited by] (7)
Abstract:
During oil and gas drilling in deep complex formations, the technical requirements of high temperature and salt-resistance of drilling fluid should be met. In this paper, a polymer brush lubricant (HLM) for water-based drilling fluids was prepared using methyl methacrylate, lauryl acrylate and 2-hyd...
Study and Application of a Graphene Lugging Agent for Water Based Drilling Fluids
ZHANG Hongwei, HUANG Guoqiang, WU Hongling, YANG Yin, LU Changbo, CHENG Zhi
2023, 40(4): 462-466. doi: 10.12358/j.issn.1001-5620.2023.04.007
Abstract(848) HTML (297) PDF (3203KB)(130) [Cited by] (2)
Abstract:
Fast plugging of microfractures and micropores in the hard brittle shales and deep buried sandstone/mudstone interbeds is one of the challenges that needs to be dealt with in solving borehole wall collapse in drilling the shale formation and reservoir damage. Graphene materials, because of their exc...
Reservoir Friendly Ultra-fine Manganese Tetroxide for Drilling Fluids
WANG Long, FANG Jing, DONG Xiumin, WANG Jinshu, FANG Junwei, GENG Yunpeng, ZHANG Jianjun, XU Tongtai
2023, 40(4): 467-474. doi: 10.12358/j.issn.1001-5620.2023.04.008
Abstract(879) HTML (352) PDF (3514KB)(111) [Cited by] (1)
Abstract:
High density drilling fluids weighted with barite were used in deep well and ultra-deep well drilling in the Shunbei block. Several problems were found with these drilling fluids during drilling, such as difficulties in maintaining mud rheology, poor settling stability as well as reservoir damage by...
An Environmentally Friendly Non-foaming Anti-water Blocking Agent
CHU Qi
2023, 40(4): 475-480. doi: 10.12358/j.issn.1001-5620.2023.04.009
Abstract(698) HTML (264) PDF (2491KB)(91) [Cited by] (2)
Abstract:
In order to improve the bubble inhibition and environmental protection performance of the waterproof locking agent for drilling fluid, a natural modified product SMFS-1 was synthesized from alginic acid, 2-(2-aminoethylamino)ethanol (AEEA), epichlorohydrin (ECH) and pentaerythritol (PETP) as raw mat...
Improving the Performance of Filter Loss Reducer Lignite Resin with Ultrasonic Induction
PENG Bo, GUO Wenyu, MU Weirong, LI Yufeng
2023, 40(4): 481-486. doi: 10.12358/j.issn.1001-5620.2023.04.010
Abstract(686) HTML (277) PDF (3255KB)(91) [Cited by] (5)
Abstract:
A water based mud was formulated with lignite resin and bentonite in laboratory in accordance with the standard SY/T 5679—2017. After agitating the mud with high-speed mixer, the mud was treated with ultrasonic wave to investigate the effects of ultrasonic vibration on the colloidal properties of th...
Development and Evaluation of a Hyperbranched Polymer for Temporary Plugging Coalbed Methane
HUANG Wanlong, LIU Hanyu, ZHAO Mingfang, WU Haixian
2023, 40(4): 487-494. doi: 10.12358/j.issn.1001-5620.2023.04.011
Abstract(567) HTML (207) PDF (2532KB)(61) [Cited by] (2)
Abstract:
To solve the problem of reservoir damage in coalbed methane development, a hyperbranched polymer temporary plugging agent MTA was developed based on the theory of reservoir protection by temporary plugging. The synthesis of MTA involves the use of raw materials such as methyl methacrylate, methyl ac...
CEMENTING FLUID
Comparative Study on Effects of Different Crystallographic Materials on Self-healing of Fractures in Set Cement under CCUS Well Work Conditions
RAO Zhihua, DENG Chenghui, MA Qianyun, WU Guang'ai, WU Zhiqiang, CHENG Xiaowei
2023, 40(4): 495-501. doi: 10.12358/j.issn.1001-5620.2023.04.012
Abstract(594) HTML (228) PDF (3451KB)(64) [Cited by] (2)
Abstract:
To achieve the goal of carbon neutrality as soon as possible, carbon capture, utilization and storage (CCUS) is an indispensable technology. High temperature high pressure environment in CCUS operations causes large stress and temperature fluctuations which in turn result in fractures in cement shea...
Study on Flushing Efficiency of Drilling Fluid Filter Cake in Oval Wellbore
TU Qiang, WANG Haiping, FU Jianglong, FAN Likun, LI Zhi, GUAN Hong, ZHANG Xingguo
2023, 40(4): 502-510. doi: 10.12358/j.issn.1001-5620.2023.04.013
Abstract(504) HTML (219) PDF (4547KB)(64) [Cited by] (1)
Abstract:
At present, the research on the flushing efficiency of drilling fluid filter cake in cementing engineering mainly focuses on the flushing condition of the circular hole casing in the middle, while the research on the influence of the hole shape and casing eccentricity on the flushing efficiency of d...
Preparation and Evaluation of a Nanometer Emulsion Flushing Spacer
MENG Renzhou, MOU Shaomin, LI Yuan, WANG Chengwen, YU Yongjin, QI Fengzhong
2023, 40(4): 511-518. doi: 10.12358/j.issn.1001-5620.2023.04.014
Abstract(623) HTML (249) PDF (5409KB)(67) [Cited by] (4)
Abstract:
Oil based drilling fluids have been widely used in drilling unconventional wells, and one of the key problems with the use of oil based drilling fluids is how to effectively clean off the residue mud and the mud cakes on the borehole wall to provide a good bonding surface for cement slurries. Nanome...
A New Technology for Evaluating Job Quality of Well Cementing Based on Ultrasonic Lamb Wave and Its Application
WANG Minghui, LI Jin, HAN Yaotu, LI Jiling, LIU Huixin
2023, 40(4): 519-526. doi: 10.12358/j.issn.1001-5620.2023.04.015
Abstract(661) HTML (264) PDF (4451KB)(63) [Cited by] (6)
Abstract:
The conventional CBL/VDL sonic log, sector bond log and ultrasonic pulse echo log all are unable to be used to accurately evaluate the quality of well cementing with light-weight cement slurries. To deal with this problem and improve the accuracy of evaluating the quality of well cementing with ligh...
Study and Application of a Fly Ash-slag Bonding Reinforcement Material
QIN Zhongkui, DONG Zhiming, PU Jian, ZENG Yong, LAN Xiaolin
2023, 40(4): 527-534. doi: 10.12358/j.issn.1001-5620.2023.04.016
Abstract(611) HTML (273) PDF (3967KB)(64)
Abstract:
When using a low-density cement slurry to cement a well, several problems need to be addressed, such as low early strength, deviation in compatibility with cement and high operation cost. To solve these problems, studies were conducted on fly ash and slag for their chemical composition, specific sur...
FRACTURING FLUID & ACIDIZING FLUID
Research and Application of High-efficiency Bactericide for Guar Gum Fracturing Fluid
CHANG Qing, ZOU Chunfeng, CAI Jingchao, WANG Yue, ZHANG Qiuhong, LI Fengguang, YANG Chao
2023, 40(4): 535-539. doi: 10.12358/j.issn.1001-5620.2023.04.017
Abstract(640) HTML (238) PDF (2344KB)(57) [Cited by] (1)
Abstract:
In response to the problem of guar gum fracturing fluid being affected by bacteria and other microorganisms during the summer in Daqing area, which leads to deterioration, and hydration, and affects the success rate of construction, the microbial diversity sequencing technology was used to analyze t...
Effect of Natural Fracture on Reservoir Temperature Distribution during Fracturing
SHI Mingxing, LI Qin, QIU Siyang, LEI Yun, JING Wei
2023, 40(4): 540-550. doi: 10.12358/j.issn.1001-5620.2023.04.018
Abstract(529) HTML (209) PDF (4234KB)(57) [Cited by] (1)
Abstract:
In hydraulic fracturing, the pre-fluid not only plays a role of fracture formation, but also plays an important role of cooling in high temperature reservoir, which affects the effect of hydraulic fracturing. In order to study the influence of natural fractures on the cooling process of precursors, ...

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