scholarly journals Laboratory Study on a New Composite Plugging Material with High Bearing Strength and High-Temperature Resistance

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Xiaoming Su ◽  
Zhanghua Lian ◽  
Hanqiao Xiong ◽  
Yuan Yuan ◽  
Junwei Fang
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Carbonate Reservoir ◽  
Invasion Depth ◽  
Temperature Resistance ◽  
Lost Circulation ◽  
Bearing Strength ◽  
High Temperature Resistance ◽  
Acid Solubility ◽  
Lost Circulation Materials

The reservoir in the Central Tarim Basin is a typical high-pressure fracture-vuggy carbonate reservoir with high temperatures, which easily leads to drilling fluid losses and the high-temperature carbonate. The conventional lost circulation materials (LCMs) cannot meet the reservoir. To resolve this problem, a rigid particle with high-temperature resistance, high acid solubility, and high rigidity was developed, tested, and evaluated. According to bridge rules of 1/2–2/3 opening degree of formation fracture, the formulation experiments of GZD and other lost circulation materials were conducted and a novel composite lost circulation material (LCM) was completed. Lastly, we investigated the compatibility of LCM and mud in site though compatibility experiment, analyzed the plugging effect of the system for fracture and vuggy by laboratory static lost circulation simulation and evaluation and sand-bed plugging experiments, respectively. The results show that compared with the conventional rigid lost material, the value of high-temperature resistance is more and acid solubility is over 98%. Also, it can work well with other fiber materials (E), variable filling particles (F and G), and superfine filling particles (H) and form a novel plugging material, named MGY-I, whose temperature resistance value is more than 473.15 K, the bearing strength is over than 9 MPa, the mud filtrate invasion depth of sand bed made from coarse particles (10∼20 mesh) is only 3.0 cm within 30 minutes, and the invasion depth is less than 1 cm within 30 minutes when the sand bed is made from 80∼100 mesh. The optimal concentrations of rigid granule, lignin fiber, elastic particle, and superfine calcium carbonate are 8% (A : B : CD = 2 : 1 : 1), 0.5%, 6%, and 1%, respectively. And, the plugging function of “GZD-rigidity bridge and filling, fiber network and deformable filing” is better exerted on the formation fracture with a high loading capacity and a high-temperature resistance.

Investigation into Permeability and Bearing Strength of Plugging Zone Formed by Lost Circulation Materials

2012 ◽  
Vol 190-191 ◽  
pp. 504-508
Author(s):  
Song Li ◽  
Yi Li Kang ◽  
Li Jun You ◽  
Da Qi Li
Keyword(s):  
Calcium Carbonate ◽  
Drilling Fluid ◽  
Soap Film ◽  
Fracture Width ◽  
Lost Circulation ◽  
Bearing Strength ◽  
Confining Pressures ◽  
Mud Loss ◽  
Lost Circulation Materials ◽  
Relationship Of

Mud loss while drilling fractured formations is a major problem for drilling operating. It is a key to successful temporary sealing technology that lost circulation materials (LCM) can quickly form the plugging zone in the fractures. The permeability of plugged zone influences its bearing strength, as drilling fluid can penetrate and break it, causing it destabilizing and then failure of lost circulation controlling. With the soap film flowmeter, designing different LCM under variable confining pressures, considering the matching relationship of grain diameters and fracture width is (0.5～1):1, analyzing the permeability of plugging zones with different materials. The results indicated that permeability of plugging zone with peanut grains is lower than that of calcium carbonate, but its bearing strength is not as good as that of calcium carbonate, while using merely single LCM. Comparing other materials, the ideal plugging zone is formed with the mixture of peanut grains and calcium carbonate, which has the lowest permeability as well as the bearing strength. The mixture of matching calcium carbonate and smaller peanut grains, comparing to the width of fracture could stands 5 MPa of pressure difference at normal temperature, and 3.9 MPa at 80°C temperature in laboratory. To some extent, it can meet the needs of temporary sealing technology and successfully deal with lost circulation, which demands plugged tightly and bilateral pressurization.

Research on Water-Based Drilling Fluid for Super Depth and Ultra-High-Temperature Horizontal Wells in Tarim Basin

2017 ◽  
Vol 730 ◽  
pp. 231-236
Author(s):  
Yue Zhi Wang ◽  
Chun Zhi Luo ◽  
Yi Di Wang
Keyword(s):  
High Temperature ◽  
Environmental Protection ◽  
Tarim Basin ◽  
Evaluation System ◽  
Drilling Fluid ◽  
Carbonate Reservoir ◽  
Development Economic ◽  
Fluid System ◽  
Temperature Resistance ◽  
Water Based

One area of northern Tarim Basin in China is carbonate reservoir, and the reservoir is between 6600 ~ 6900 m. The bottom hole static temperature is close to 170°C, the ECD of pore pressure is 1.1 ~ 1.15 g/cm3. In order to improve the development economic benefit, reservoir need to adopt horizontal well development. Water-based drilling fluid is required to resistant high temperatures and high salt, prevent leakage of limestone reservoir fracture, control the density, protect the reservoir from damage, and has good rheological properties. For old poly-sulfide drilling fluid system, through the indoor evaluation system of various treatment agent and temperature resistance, authors found that by using polymer viscosities, loss of water and temperature resistance of lubricant can reach 140°C. Therefore authors developed the temperature stability agent and high temperature resistant lubricants. This paper introduces the mechanism of the treatment, and evaluates the performance of synthetic products. Aiming at the shortage of the lubricant, authors develop a blister, crosslinking, good environmental protection and maintain water-based lubricant characteristics of resistance to high temperature lubricant. It has good environmental protection ability. Through the evaluation, it has good lubricity and temperature resistance. By introducing the resistance temperature resistance to high temperature drilling fluid system, and after the application in well H9-10H, new drilling fluid system was carried out, well meet the requirements of drilling engineering.

Natural Vegetable Gum Drilling and Completion Fluids System for Industrial Control and Application

2011 ◽  
Vol 467-469 ◽  
pp. 1345-1350 ◽  
Author(s):  
Feng Xia Li ◽  
Guang Chen Jiang ◽  
Zheng Ku Wang ◽  
Mao Rong Cui
Keyword(s):  
High Temperature ◽  
Industrial Application ◽  
Oil And Gas ◽  
Drilling Fluid ◽  
Petroleum Industry ◽  
Industrial Control ◽  
Oil And Gas Development ◽  
Temperature Resistance ◽  
High Temperature Resistance ◽  
Completion Fluids

To simplify the operation for the oil and gas development for drill and complete the well in the petroleum industry, a natural vegetable gum drilling and completion fluids system is developed for the industrial control and application. As the system combines the advantage of the drilling fluid and completion fluid, it need not change the two different fluids during the operation, which is beneficial to the operation control. In addition, it can improve the implementation of the oil and gas exploration for industrial application. An extensive laboratory work for the high-temperature resistance capability of the natural vegetable gum drilling and completion fluids system is carried out, including the formulation study of the detailed system and the corresponding performance evaluation. In the system, with the basic formula of the natural vegetable gum drilling and completion fluids system, several new formulas beneficial to improve the high-temperature resistance capability of the system have been described. The corresponding laboratory analysis has demonstrated that the prosperities of the system, with the temperature resistance capability up to 305℉, are proper for the industrial application.

Rectorite drilling fluid: high-temperature resistance for geothermal applications

Geothermics ◽  
2021 ◽  
Vol 96 ◽  
pp. 102196
Author(s):  
Sheng Wang ◽  
Zhijun Li ◽  
Qiang Chen ◽  
Ruhua Gong ◽  
Gan Zhao ◽  
...  
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Temperature Resistance ◽  
High Temperature Resistance

Research and Development of Self-Lubricating Bearing Materials

2013 ◽  
Vol 651 ◽  
pp. 198-203
Author(s):  
Xiu Ling Wang ◽  
Li Ying Yang ◽  
Shou Ren Wang
Keyword(s):  
High Temperature ◽  
Research And Development ◽  
Metal Matrix ◽  
Future Trend ◽  
Al Alloy ◽  
Temperature Resistance ◽  
The Future ◽  
High Temperature Resistance ◽  
Bearing Materials ◽  
New Type

It is significant and necessary to carry out the research and development of self-lubricating bearing. The current study of metal matrix self-lubricating bearing materials is summarized. A new type of high temperature self-lubricating Ti-Al alloy bearing materials is proposed. It is light, anti-friction, anti-corrosion and high temperature resistance (600 °C). The future trend is introduced in the end of this paper.

Mineral-impregnated carbon fibre reinforcement for high temperature resistance of thin-walled concrete structures

2019 ◽  
Vol 97 ◽  
pp. 68-77 ◽  
Author(s):  
Kai Schneider ◽  
Albert Michel ◽  
Marco Liebscher ◽  
Lucas Terreri ◽  
Simone Hempel ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Fibre ◽  
Concrete Structures ◽  
Fibre Reinforcement ◽  
Temperature Resistance ◽  
High Temperature Resistance ◽  
Thin Walled
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