2025 Vol. 42, No. 1

FORUM
Research Progress, Current Situation Analysis and Development Suggestions of Drilling Fluid Treatment Agents in China
WANG Zhonghua
2025, 42(1): 1-19. doi: 10.12358/j.issn.1001-5620.2025.01.001
Abstract(342) HTML (98) PDF (2278KB)(130)
Abstract:
To understand the new achievements of drilling fluid additives in China, this article reviews the recent development and application of drilling fluid additives, based on modified biomass materials, synthetic polymers, condensation reaction products, modified industrial by-products, and domestic was...
Research Progress in Preparation of Nanocellulose and Its Application in Drilling Fluids
ZHAO Xionghu, WANG Can, XIAO Zhe, ZHANG Xi, ZHAO Yueqin
2025, 42(1): 20-29. doi: 10.12358/j.issn.1001-5620.2025.01.002
Abstract:
Celluloses are a common additive used in various water-based drilling fluids to effectively reduce the filtration rate, enhance the drilled solids suspending capacity and improve the rheology of the drilling fluids. Nanocellulose as an innovative drilling fluid additive has, apart from the advantage...
DRILLING FLUID
Stress Sensitivity Experiment on Shale Gas Formations in Marine-Continental Transitional Facies in Easten Margin of Ordos Basin
LI Bing, NING Xianyi, ZHU Weiping, CHEN Mingjun, HE Pengbo, KANG Yili, LAI Zhehan
2025, 42(1): 30-40. doi: 10.12358/j.issn.1001-5620.2025.01.003
Abstract:
The shale gas formations in the marine-continental transitional facies of the eastern margin of the Ordos Basin are tight gas formations with complex pore and fracture structures as well as high heterogeneity which result in special stress sensitivity of the formations. To understand the degree of t...
Visual Experimental Study on Evolution and Particle’s Characteristic Behavior of Plugging Layers inside Fractured Loss Zones
PU Lei, XIE Lingzhi, XU Peng, CHEN Huan, XU Mingbiao, WANG Bangzhe
2025, 42(1): 41-50. doi: 10.12358/j.issn.1001-5620.2025.01.004
Abstract:
Mud losses into fractures is one of the most difficult problems encountered in drilling unstable formations. Particle bridging is the most effective method of controlling mud losses into fractures. In traditional fracture experimental apparatus how the plugging layers are formed inside the fractures...
Wellbore Stability Technology of Fractured Carbonate Formation Drilling Fluid in Shunbei Region
LIU Xiongwei, FAN Sheng, GUAN Jintian, HE Yinbo
2025, 42(1): 51-57. doi: 10.12358/j.issn.1001-5620.2025.01.005
Abstract:
Based on the geological analysis of the carbonate rock formation in Shunbei oil and gas field, the reasons for the formation's easy wellbore instability are clarified: first, the rock is easy to be broken and the fracture develops, which is easy to have secondary fracture development, malignant leak...
Mechanisms of Borehole Wall Destabilization in Drilling Shale Formations in the Central Part of Block Jinzhou-25-1 in Bohai Basin and Drilling Fluid Countermeasures
GENG Lijun, LIU Feng, GANG peng, DONG Xinrou, LIU Wei, LI Bojia
2025, 42(1): 58-65. doi: 10.12358/j.issn.1001-5620.2025.01.006
Abstract:
Well drilling in the central part of the block Jinzhou-25-1 in Bohai basin has frequently encountered borehole wall destabilization when drilling the Dongying formation shales. Based on the analyses of the components and structure of the shales as well as the measurement of their mechanical properti...
Investigation of High-Temperature Resistant Ionic Liquid Inhibitors for Xinjiang ShapaiGroup 9 and Their Inhibition Mechanism
GAO Shifeng, QU Yuanzhi, HUANG Hongjun, REN Han, JIA Haidong, LIU jingping, JIA Han
2025, 42(1): 66-73. doi: 10.12358/j.issn.1001-5620.2025.01.007
Abstract:
The effect of reservoir lithology on the stability of the wellbore in Xinjiang Shapai Group 9 was investigated from multiple perspectives via X-ray diffraction, infrared spectroscopy, scanning electron microscopy, and water contact angle. The inhibition performance, inhibition mechanism, and applica...
Development of a Biodegradable Polymer Temporary Plugging Agent for Drilling Fluid
TIAN Zhiyuan, QI Duo, WANG Haibo, ZHANG Xinpeng, GUO Baohua, XU Jun
2025, 42(1): 74-81. doi: 10.12358/j.issn.1001-5620.2025.01.008
Abstract:
Biodegradable polyester temporary plugging agents (TPAs) have good degradability and low damage to reservoirs, but the disadvantages, which include low thermal stability, low strength of the plugging layers formed and high production cost etc., make it difficult for them to be widely used. To satisf...
High Density and High Performance Drilling Fluid System Research and Application at Pakistan North Region ADHI Block
LI Ling, ZHOU Chuxiang, JI Yongzhong, ZHANG Guangjin, WU Gang
2025, 42(1): 82-89. doi: 10.12358/j.issn.1001-5620.2025.01.009
Abstract:
The mid-upper Early Miocene Murree formation in the ADHI block, northern Pakistan, is a long red mudstone located in the Φ311.15 mm interval with a length of 1400-1600 m, which is a major difficulty and extremely challenging drilling operation in the block. The red mudstone section has the character...
A Thermodynamic Model for Predicting 3D Phase Equilibrium Surface of Natural Gas Hydrates Considering Salt Concentration
ZHANG Geng, LI Wentuo, HUANG Honglin, LUO Ming, MA Chuanhua, WU Yanhui, LI Jun
2025, 42(1): 90-101. doi: 10.12358/j.issn.1001-5620.2025.01.010
Abstract:
Accurate prediction of the thermodynamic stability of gas hydrates in salt-bearing systems is of great significance for predicting the accumulation range and determining the decomposition domain of hydrate. Therefore, considering the non-spherical characteristics of hydrate crystal cavity and the el...
CEMENTING FLUID
Preparation and Application of a High Temperature Suspension Stabilizing Filter Loss Reducer for Cement Slurries
DU Yubin, LIU Zishuai, LYU Bin, ZHAO Weichao, ZHOU Chongfeng, FAN Ronghua
2025, 42(1): 102-109. doi: 10.12358/j.issn.1001-5620.2025.01.011
Abstract:
High formation temperature gradients prevail in the Qinghai Oilfield (Tsaidam Basin). High bottom hole temperatures in deep and ultra-deep wells plus high formation pressures from the over-pressurized formation belts impose rigorous requirements on cement slurries as to their high temperature high p...
Mechanisms of Organic Phosphonate Retarders to Abnormally Thicken Oil Well Cement
ZOU Yiwei, DAI Dan, WANG Yixin, GENG Chenzi, ZHU Sijia, YAO Xiao
2025, 42(1): 110-116. doi: 10.12358/j.issn.1001-5620.2025.01.012
Abstract:
Organic phosphonates are generally used as retarders for cement slurries at high temperatures in Yanchang oilfield. This paper discusses the effects of the retarder sodium ethylene-diamine tetramethylene-phosphonate (EDTMPS) on the thickening performance of the class G high-sulfur-resistant (HSR) oi...
FRACTUREING FLUID & ACIDIZING FLUID
Study on Rheology and Reaction Kinetics of Low Corrosion Self-Heating Gelling Fracturing Fluids
LI Yuchi, LUO Mingliang, ZHAN Yongping, FAN Qiao, LYU Yuanjia, ZHAO Chunguang
2025, 42(1): 117-126. doi: 10.12358/j.issn.1001-5620.2025.01.013
Abstract:
In heavy oil reservoir fracturing, the fracturing fluid, after entering into the reservoir, causes the reservoir temperature to decrease and the viscosity of the crude oils around the fractures to increase to even block the pore throats of the formation. To deal with this problem, a low corrosion se...
Recycling in Drilling Fluids of Flowback Fluids from Slick Water Fracturing Operation
LIU Huaizhu, ZHAO Kangning, CHEN Dong, ZHANG Chao, CHANG Xiaofeng, ZHANG Jie, ZHANG Wangyuan, ZHANG Fan
2025, 42(1): 127-133. doi: 10.12358/j.issn.1001-5620.2025.01.014
Abstract:
When using slickwater fracturing fluids in reservoir stimulation, large amount of fluids flowed back from the hole have complex compositions and need to be discharged. In disposing these fluids, the “zero discharge” technology does not work. To solve this problem, the techniques for the treatment of...
COMPLETION FLUID
A Single Phase Acid for One Step Removal of Organic Deposition and Inorganic Scale
CUI Bo, RONG Xinming, FENG Puyong, YAO Erdong, ZHOU Fujian, WANG Shun
2025, 42(1): 134-142. doi: 10.12358/j.issn.1001-5620.2025.01.015
Abstract:
The deposition of organic and inorganic scales in the near wellbore zone seriously affects the normal production of oil and gas. Conventional blockage removal systems cannot simultaneously remove organic, inorganic, and their mixed scales. A new multifunctional unblocking system, single phase acid, ...