2020 Vol. 37, No. 5

2020, 37(5)
Abstract:
FORUM
Research Progress Made and Development Trend of Drilling Fluid Lubricants with Polar Adsorption Ability
LI Gongrang, WANG Chengjun
2020, 37(5): 541-549. doi: 10.3969/j.issn.1001-5620.2020.05.001
Abstract(1305) PDF (949KB)(178) [Cited by] (25)
Abstract:
With more and more deep wells, ultra-deep wells, highly deviated wells, directional wells and horizontal wells drilled worldwide, demands on the lubricity of water base drilling fluids are increasing. Drilling lubricants with polar adsorption ability can effectively enhance the adsorption of the lub...
DRILLING FLUID
Study and Application of a High Density Oil Base Drilling Fluid with High Temperature Resistance of 220℃
WANG Xingyuan, LU Dengyun, WU Zhengliang
2020, 37(5): 550-554,560. doi: 10.3969/j.issn.1001-5620.2020.05.002
Abstract:
Most drilling fluids have various disadvantages such as low temperature stability, low density and poor circulating suspending capacity when used to drill ultra-high temperature deep and ultra-deep wells. An oil base drilling fluid with the highest density of 2.30 g/cm3 has been developed to solve t...
Development and Evaluation of a New High Efficiency Emulsifier for Oil Base Drilling Fluids
DU Kun
2020, 37(5): 555-560. doi: 10.3969/j.issn.1001-5620.2020.05.003
Abstract:
A new lipophilic emulsifier, NGE-1, with high temperature resistance and stability has been developed with Bisphenol F, chlorosulfonic acid and ethanolamine as the main raw materials through etherification, sulfonation and esterification reactions. The molecular structure of the emulsifier NGE-1 was...
Laboratory Study on High Temperature Low Density Oil Base Drilling Fluids
FAN Sheng, ZHOU Shusheng, FANG Junwei, YU Yang, QI Biao, LI Yinting
2020, 37(5): 561-565. doi: 10.3969/j.issn.1001-5620.2020.05.004
Abstract:
A high temperature low density oil base drilling fluid was formulated with a newly developed organophilic clay MZ to protect low pressure reservoirs in high temperature deep wells. In laboratory experiment, the colloid fraction of MZ was greater than that of another three organophilic clays:A828, B5...
The Status Quo of the Standards of Organophilic Clays for Oil Base Drilling Fluids and Discussion Thereof
LUO Xiaohu
2020, 37(5): 566-571. doi: 10.3969/j.issn.1001-5620.2020.05.005
Abstract:
Studies were conducted on the testing items in 24 standards of organophilic clays. It was found that the frequency of occurrence of those items such as appearance, moisture, screening residue (particle sizes greater than a specified value), ratio of colloid, apparent viscosity, plastic viscosity and...
A High Temperature High Density Diesel Oil Base Drilling Fluid Used in North Block in North Pakistan
LI Ling, JI Yongzhong, XU Qicong, LI Wei, YANG Gang
2020, 37(5): 572-577. doi: 10.3969/j.issn.1001-5620.2020.05.006
Abstract:
In the North Block in Pakistan, the geological condition of the formations is very complex, and the formations penetrated have repeated inversion. The petroleum resource is buried deep in high temperature high pressure formations. Wells drilled in this block penetrated long section of shales in the ...
High Performance Drilling Fluid Technology for Tight Oil Formation Drilling in Liaohe Oilfield
YU Meng, WANG Jian, WANG Fei
2020, 37(5): 578-584. doi: 10.3969/j.issn.1001-5620.2020.05.007
Abstract:
This paper introduces the characteristics of the tight oil reservoirs in the Shenbei block of Liaohe Oilfield and the studies performed on the hydration, swelling, sloughing and cave-in of the hard and brittle shales in the member 4 of the Shahejie formation in the block. Using clay mineral analysis...
Preparation and Working Mechanisms of an Ultra-high Temperature Low Viscosity Polymer Filtrate Reducer
LUO Mingwang, ZHANG Xianbin, WANG Zhongqiu, WANG Yamei, LOU Yishan, XIE Binqiang
2020, 37(5): 585-592. doi: 10.3969/j.issn.1001-5620.2020.05.008
Abstract(1087) PDF (2774KB)(132) [Cited by] (18)
Abstract:
A low molecular weight polymer filtrate reducer PANAD was developed to overcome the disadvantages of conventional filtrate reducers use in deep and ultra-deep well drilling, such as poor stability at high temperatures, poor resistance to salt contamination and excessive impact on the rheology of dri...
A Synthetic Resin Filter Loss Reducer Made from Environmentally Friendly Biomasses
ZHOU Qicheng, SHAN Haixia, WEI Hua, LI Bin, ZHOU Yaxian, FU Junchang
2020, 37(5): 593-596. doi: 10.3969/j.issn.1001-5620.2020.05.009
Abstract:
With more and more stringent environment protection requirements imposed on the petroleum exploration industry, drilling fluid additives are required to be nontoxic and have high performance. As the core additive of drilling fluids, filter loss reducer is required to have properties such as high tem...
Development and Field Application of an Online Drilling Fluid Property Monitoring System
ZHANG Zhicai, LIU Baoshuang, WANG Zhongjie, LUO Yunfeng, LIU Zhendong, TU Dehong, XU Yunbo
2020, 37(5): 597-601,607. doi: 10.3969/j.issn.1001-5620.2020.05.010
Abstract(1062) PDF (2898KB)(158) [Cited by] (11)
Abstract:
Drilling automation is an inevitable trend in the development of petroleum industry, and the automatic measurement of the drilling fluid properties is now finding more and more application in field operation instead of just being a laboratory tool. The Research Institute of Drilling Technology of Sh...
Laboratory Study on the Properties of a New Delayed Expansion Lost Circulation Material
ZANG Xiaoyu, QIU Zhengsong, BAO Dan, MIAO Hailong, ZHONG Hanyi, ZHAO Xin, ZHANG Xianbin, CHEN Anliang
2020, 37(5): 602-607. doi: 10.3969/j.issn.1001-5620.2020.05.011
Abstract:
Severe mud losses into fractured formations seriously restrict the efficient development of oil and gas in formations with complex geological conditions. Bridging agents presently used for mud loss control have poor deformability, the commonly used water-adsorbing resin lost circulation materials (L...
A Method of Evaluating the Effect of a Chemical Bonding Anti-Sloughing Agent
LI Lei, GUO Baoyu, WANG Xudong, QIU Zhengsong, WANG Jun, YANG Longbo
2020, 37(5): 608-612. doi: 10.3969/j.issn.1001-5620.2020.05.012
Abstract:
Most methods presently used to evaluate the performance of anti-sloughing agents lack the specificity to chemical bonding anti-sloughing agents (bonding, solidifying), and thus cannot be used to evaluate this kind of anti-sloughing agents. Based on the mechanisms of chemical bonding anti-sloughing a...
Mud Losses into Depleted Loose Quartz Sandstone Shallow Gas Zones in Gas Field D: Mechanisms and Preventing Technology
XIANG Xiong, CHEN Yuanbo, ZHANG Liquan, XIAO Weiwei, YANG Honglie, LIU Xiliang
2020, 37(5): 613-619. doi: 10.3969/j.issn.1001-5620.2020.05.013
Abstract:
The pore pressure, collapse pressure, leaking pressure and fracture pressure of a depleted gas zone declined remarkably with time. When drilling into a depleted gas zone, the differential pressure between the pressure exerted by the mud column and the pore pressure of the formation is high, resultin...
Productivity Index Method for Experimental Evaluation of Working Fluid Damage in Low Permeability Gas Reservoir
YOU Lijun, CHEN Yang, KANG Yili, YAN Xiaopeng, WANG Yijun
2020, 37(5): 620-625. doi: 10.3969/j.issn.1001-5620.2020.05.014
Abstract:
Working fluids pumped into a low permeability gas reservoir cause damage to the production capacity of the gas well, and permeability recovery is generally used to evaluate the degree of reservoir damage. Based on field practice, a percent retention of productivity index is presented as an index for...
Laboratory Study on Static Sedimentation Stability of High-Density Drilling Fluids at High Temperatures
DONG Xiaoqiang, LI Xiong, FANG Junwei, ZHANG Guo
2020, 37(5): 626-630. doi: 10.3969/j.issn.1001-5620.2020.05.015
Abstract:
The sedimentation stability of a high temperature high density drilling fluid plays a key role in stabilizing the property of the drilling fluid and in the safety of well control. Using small amplitude in-situ oscillation method, in which low shearing stress and low frequency oscillation were applie...
Study on and Application of Drilling Fluids Formulated with Fracturing Flowback Fluids in Longdong, Changqing Oilfield
JIA Jun, CHEN Lei, ZHANG Liang
2020, 37(5): 631-637. doi: 10.3969/j.issn.1001-5620.2020.05.016
Abstract:
Fracturing operation in Longdong, Changqing Oilfield produced very large amount of fracturing flowback fluids which were seldom reused because of technical obstacles. To minimize the amount of the fracturing flowback fluids discarded as waste fluid and to turn them into useful resources, four typica...
Drilling Fluid Technology for Drilling Third Interval of Extended Reach Appraisal Well Lixie572
SUO Haizhao
2020, 37(5): 638-643. doi: 10.3969/j.issn.1001-5620.2020.05.017
Abstract:
drilled in Lijin block (Shengli Oilfield) penetrate two formation members, the shale Sasan member and the sandy conglomerate Sasi member interbedded with calcareous mud stone. These two members are easy to collapse and hard to drill. Geological data show that wells drilled nearby have experienced ma...
CEMENTING FLUID
Study and Application of an Ultra-Low-Density Cement Slurry
LI Shaoli
2020, 37(5): 644-650. doi: 10.3969/j.issn.1001-5620.2020.05.018
Abstract:
To successfully cement wells penetrating low-pressure easy-to-leak formations in Ebei (north Hubei) area, Zhongyuan Well Cementing Company has developed a high strength ultra-low-density cement slurry suitable for use at temperatures between 60℃ and 120℃. The cement slurry was formulated with self-d...
Study and Evaluation of a Nano Compound Strength Enhancer
GAO Jichao, LI Jianhua, ZHOU Xue, LI Yanjun, LU Haichuan, LI Dewei, YANG Chen
2020, 37(5): 651-655. doi: 10.3969/j.issn.1001-5620.2020.05.019
Abstract:
Set cement from a low-density cement slurry has low strength and slow hardness development at the top of the cement slurry. Regular accelerating early strength materials, though can be used to enhance the strength of the set cement, will obviously shorten the thickening time of the cement slurry, he...
Suggestions on Application of Non-Foam Ultra-Low-Density Cement Slurries
LI Wandong
2020, 37(5): 656-663. doi: 10.3969/j.issn.1001-5620.2020.05.020
Abstract:
Many oil and gas wells in China are cemented with ultra-low-density cement slurries because these wells penetrated lowpressure and easy-to-leak formations. Design criteria, test methods and slurry mixing procedure for cement slurries of normal density can not be used in operation with ultra-low-dens...
FRACTURING FLUID & ACIDIZING FLUID
A High Temperature Corrosion Inhibitor for Use at 200℃
ZHANG Xingde, YUAN Li, WANG Chuan, WU Li, ZHANG Qu
2020, 37(5): 664-669. doi: 10.3969/j.issn.1001-5620.2020.05.021
Abstract:
inhibitor for use in acidification fluids has been developed to deal with corrosion to downhole tubular goods by acids at 200℃. The synthesis of this corrosion inhibitor involved the use of Mannich base quaternary ammonium salt as the main additive, an alkynol derivative and an inorganic salt as the...
A Novel Gelled Acid for the Acid Fracturing of the High-Temperature Carbonates and its Application
WANG Meng, CHE Mingguang, ZHOU Changlin, LI Li, CHEN Weihua, LIU Fei
2020, 37(5): 670-676. doi: 10.3969/j.issn.1001-5620.2020.05.022
Abstract:
Acid fracturing is a key measure to the efficient development of oil and gas from carbonate reservoirs. The properties and compatibility of the working fluid used for acid fracturing with the reservoir formations are prerequisite to the succuss of the stimulation job. Acid fluids presently in use ca...