2016 Vol. 33, No. 6

Display Method:
2016, 33(6)
Abstract:
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(1566) PDF (2116KB)(827) [Cited by] (15)
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...
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(1400) PDF (2703KB)(627) [Cited by] (29)
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 ...
Study and Application of a High Temperature Drilling Fluid with Strong Plugging Capacity
KONG Yong, YANG Xiaohua, XU Jiang, LIU Guichuan, ZHANG Guo, JIN Junbin, LI Xiong
2016, 33(6): 17-22. doi: 10.3969/j.issn.1001-5620.2016.06.003
Abstract:
A high temperature borehole wall stabilizing agent SMNA-1 was developed to resolve problems encountered in high temperature deep well drilling. SMNA-1 functions at high temperature to above 200℃. It has a rigid molecular structure and is deformable at high temperature. SMNA-1 is able to enhance the ...
Study on Alkyl Polyglucoside Derivative Drilling Fluid and Its Use In Shale Gas Drilling
ZHAO Hu, LONG Daqing, SI Xiqiang, WANG Shanju, SHI Peiqian, LIU Jiezheng, WU Jian
2016, 33(6): 23-27. doi: 10.3969/j.issn.1001-5620.2016.06.004
Abstract:
The YS108 shale gas block is located in Huangjinba, Zhaotong, Yunnan Province, and the pay zone of this block is the Longmaxi formation of the lower Silurian series. The lithology of the pay zone is mainly gray, black shales which are easy to slough and collapse. In horizontal drilling, high frictio...
Shale Inhibition Characteristics of a New Polyamide-Amine Dendrimer
TANG Zhichuan, QIU Zhengsong, ZHONG Hanyi, ZHANG Xin, ZHANG Daoming
2016, 33(6): 28-32. doi: 10.3969/j.issn.1001-5620.2016.06.005
Abstract:
Dendrimers, because of their unique molecular structures and characteristics, have been receiving more and more attention in recent years. Polyamide-amine (PAMAM), the most understood dendrimer, has been widely used in many felds, including oilfeld chemistry. In a recent study, the inhibitive capaci...
Borehole Stability in Drilling the Paleogene System and Inner Buried Hill in Huabei Oilfeld
WANG Dongming, CHEN Mian, LUO Yucai, YU Jiantao, XU Minglei, YU Haifa, YANG Kai
2016, 33(6): 33-39. doi: 10.3969/j.issn.1001-5620.2016.06.006
Abstract:
The lithology of the Paleogene system in the Huabei oilfeld is mainly sandstone and mudstone, intercalated occasionally with basalt and coal bed. Different formation pressure systems have been found in this oilfeld. Time required for coping with troubles during drilling accounted for 73.62% of the t...
Experimental Study on Oil Base Mud Loss Control with Gel LCM
WANG Can, SUN Xiaojie, QIU Zhengsong, LIU Junyi, HUANG Daquan, ZHANG Xianbin, Pu Dan
2016, 33(6): 40-44. doi: 10.3969/j.issn.1001-5620.2016.06.007
Abstract:
Loss of oil base mud downhole is diffcult to stop in feld operation and causes great economic loss. An oil base mud loss control method is presented to effciently control oil base mud loss. This method uses gel lost circulation material (LCM) to control oil base mud loss. In selecting additives for ...
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:
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...
Method of Evaluating Corrosion Rate of Formates to Casing and Tubing Strings and the Influencing Factors
YANG Xiangtong, XIAO Weiwei, LIU Hongtao, XU Tongtai, XIE Junfeng, ZHANG Ruifang
2016, 33(6): 51-57. doi: 10.3969/j.issn.1001-5620.2016.06.009
Abstract:
Standard method for evaluating the corrosion rate of formatesis not presently available. A method of evaluating the corrosion rate of formates to casing/tubing strings has been presented with an idea borrowed from the methods of evaluating the corrosion rate of metals. In laboratory experiment, meta...
Treatment of CO2 Contamination to Water Base Drilling Fluids
CHEN Fu, YANG Mei, AI Jiawei, LI Wei, LUO Taotao, CHEN Junbin
2016, 33(6): 58-62. doi: 10.3969/j.issn.1001-5620.2016.06.010
Abstract:
Many technologies handling CO2 contamination to drilling fluids have shortages in practical use. This paper summarizes the defciencies of the methods commonly used, and presents advices for the treatment of CO2 contamination based on the mechanisms of contamination:drilling fluid should have moderat...
Application of Drilling Fluid Zero-discharge Technology in Bailu Lake Multi-well Pad
XU Yunlong, XU Dui, ZHANG Xiaoming, XIA Wenan, LIU Tianke, SUN Ronghua
2016, 33(6): 63-67. doi: 10.3969/j.issn.1001-5620.2016.06.011
Abstract:
The Bailu Lake multi-well pad is located in a scenic area where environmental protection requirements are tough and solidifcation of waste drilling fluid for burial is prohibited. Multi-well pad technology was adopted in the drilling of 43 wells in this area to conform to the environmental protectio...
A New Low Density Slag Cementing Slurry
LIU Lu, LI Ming, GUO Xiaoyang
2016, 33(6): 68-72. doi: 10.3969/j.issn.1001-5620.2016.06.012
Abstract:
Floating beads and hollow glass beads are commonly used lightweight additives in cement slurries. These lightweight additives are expensive, and generally large amount of them are needed in formulating cement slurries of required density. Cement slurries treated with floating beads and hollow glass ...
A Novel Thixotropic Well Cementing Slurry
LU Haichuan, LI Yang, SONG Yuanhong, WEI Jijun, ZHU Zhiyong, LU Yanli
2016, 33(6): 73-78. doi: 10.3969/j.issn.1001-5620.2016.06.013
Abstract:
Mature thixotropic cement slurries are seldom seen in China presently. Slurries commonly used in oilfelds are of weak thixotropy, temperature sensitive, and have poor overall properties. To solve these problems, a thixotropic agent, N-1, has recently been developed by combining a synthesized amphote...
Prediction of Safe Starting Pressure after Pump Halt for Thixotropic Cement Slurry Injection
YUAN Bin, YANG Yuanguang, YANG Shengrong, LIU Liming, CHEN Xiaoju
2016, 33(6): 79-83. doi: 10.3969/j.issn.1001-5620.2016.06.014
Abstract:
The use of thixotropic cement slurry is an effective means of anti-channeling and controlling lost circulation in feld operations. In pumping thixotropic cement slurry, if pump halts, the pressure of re-starting the pump will increase with time. Too big an initiation pressure may result in lost circ...
Cementing Wells Penetrating Clastic Rocks with Self-healing Cement in Block Tazhong
TIAN Baozhen, LI Qingjie, QIN Yi, SUN Wanxing, SHEN Lei, CHEN Dacang, ZHANG Liang, ZHOU Jian
2016, 33(6): 84-90. doi: 10.3969/j.issn.1001-5620.2016.06.015
Abstract:
The clastic formations in the Block Tazhong have complex structures, poor lithological characters and toughness, and high brittleness. During drilling operation, wells penetrating the clastic formation have experienced borehole collapse and sloughing, and borehole of irregular sizes was formed. Ceme...
Anti-channeling High Density Cement Slurry Used in Cementing Well Hongbei-1
ZHONG Fuhai, FEI Zhongming, GAO Fei, SUN Wanxing, QIN Yi, ZHENG Yanli
2016, 33(6): 91-94. doi: 10.3969/j.issn.1001-5620.2016.06.016
Abstract:
The well Hongbei-1 is a well with the frst class well control risk drilled in the Qinghai oilfeld. It is also a well with the highest formation pressure drilled in that oilfeld. A high density (2.4 g/cm3) anti-channeling cement slurry was developed to cope with the cement slurry channeling. Hematite...
Study on the Rheology and Drag Reducing Performance of Epoxy Chloropropane Modifed Cellulose Solution
ZHU Yimei, FANG Bo, LU Yongjun, QIU Xiaohui
2016, 33(6): 95-100. doi: 10.3969/j.issn.1001-5620.2016.06.017
Abstract:
To improve the viscoelasticity of carboxymethyl hydroxyethyl cellulose (CMHEC) solution to widen its feld of application, a water soluble EPIC-CMHEC has been developed by reacting epoxychloropropane (EPIC) with CMHEC. EPIC-CMHEC and CMHEC water solutions were studied for their rheology (flow curve, ...
The Development and Application of a Recyclable Clear Fracturing Fluid
WANG Gaihong, LIAO Lejun, GUO Yanping
2016, 33(6): 101-105. doi: 10.3969/j.issn.1001-5620.2016.06.018
Abstract:
Stimulated reservoir volume fracturing operation in Changqing oilfeld requires large amount of fracturing fluids. To save water, fracturing fluids are required to be recycled. However, the recycled hydroxypropyl fracturing fluid presently commonly used in Changqingdoes not have the ability to carry ...
A High Temperature Shear-resistant Association Supramolecular Polymer Weak Gel Fracturing Fluid
JIANG Qihui, JIANG Guancheng, LU Yongjun, LIU Ping, QIU Xiaohui
2016, 33(6): 106-110. doi: 10.3969/j.issn.1001-5620.2016.06.019
Abstract:
Supramolecular polymer chemistry is a new interdiscipline of supramolecular chemistry and polymer chemistry. Based on the research work previously done on supramolecular fracturing fluid, a high temperature shear-resistant supramolecular polymer viscosifer, SPM-2, has been synthesized with a zwitter...
Preparation and Evaluation of a New High Performance Diverting Acid
WANG Yanli
2016, 33(6): 111-115. doi: 10.3969/j.issn.1001-5620.2016.06.020
Abstract:
Carbonate rock reservoirs have plenty of micro fractures. Unidirectional fngering of acid solution in acidizing carbonate reservoirs always results in diffculties in communicating fractures and low effciency of acidizing fracturing job. To improve the job effciency, a new high performance diverting ...
Key FactorsAffecting Damage by Fracturing Fluidsto Jiannan Tight Sandstone Gas Reservoir
FU Meilong, HU Zewen, HUANG Qian, TANG Fang
2016, 33(6): 116-120. doi: 10.3969/j.issn.1001-5620.2016.06.021
Abstract:
Carboxymethyl hydroxypropyl guar gum fracturing fluid, an oligomer fracturing fluid and hydroxypropyl guar gum fracturing fluid are used in fracturing the tight sandstone gas reservoirs in Jian'nan block. In recent laboratory experiments, the viscosity, surface tension and residue of the three fract...
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:
The flowback of fracturing fluid directly affects the production rate of a reservoir in the later stage of production. In laboratory studies, the basic physical properties of reservoir core and fracturing fluid were measured. Based on the measurement, factors affecting automatic imbibition and key f...