Experimental Research on the New Foam Drilling Fluid System

2013 ◽  
Vol 781-784 ◽  
pp. 2857-2860
Author(s):  
Hai Min Xu ◽  
Lin Zhao ◽  
Hua Wu ◽  
Wan Long Huang ◽  
Dong Ma ◽  
...  
Keyword(s):  
High Temperature ◽  
High Salinity ◽  
Oil Pollution ◽  
Drilling Fluid ◽  
Experimental Result ◽  
Fluid System ◽  
Compound A ◽  
Foaming Agent ◽  
New Type ◽  
Foam Drilling

Based on the formation characteristics of high temperature (above130°C ) and multi-salt, we optimize several blowing agent monomers to compound a new type of foaming agent, and screen out the new foam stabilizer to determine the new ebonite foam drilling fluid system. In the laboratory, we evaluated its resistance to high temperature, salt and oil pollution. And we made a research on its rheological characteristics of the foam and the behavior of high salinity. The experimental result shows that the ebonite foam drilling fluid has much more foam, longer stable time, significant effect of the resistance to high temperature, salt and oil pollution and has good sand-carrying ability, which can effectively prevent the occurrence of loss circulation and meet the requirement of rock carrying and wellbore stabilization.

Micro Foam Drilling Fluid System Performance Research and Application

2013 ◽  
Vol 868 ◽  
pp. 601-605 ◽  
Author(s):  
Nan Nan Wang ◽  
Yong Ping Wang ◽  
Dong Zhang ◽  
Hui Min Tang
Keyword(s):  
Oil And Gas ◽  
Drilling Fluid ◽  
Field Application ◽  
Fluid System ◽  
Foaming Agent ◽  
Fluid Properties ◽  
Single Well ◽  
Set Up ◽  
Reservoir Protection ◽  
Foam Drilling

Micro foam drilling fluid has irreplaceable advantages in reservoir protection, drilling speed, improve the cementing quality and leak plugging, especially suitable for the "three low" Daqing peripheral oilfield Haita area. Indoor the foaming agent, foam stabilizing agent were screened, Preferably choose the efficient composite foaming agent, stabilizer and thickener, the drilling fluid system is transformed into micro foam drilling fluid system. And evaluate the inhibition, anti temperature, anti pollution (anti clay, calcium, anti kerosene) reservoir protection capability, The micro foam drilling fluid leakage, oil reservoir protection, speed up mechanism and micro foam drilling fluid rheological characteristics were studied, Set up a specific rheological model of Micro Foam Drilling fluid, According to the characteristics of Gulong oilfield,R&D the calculation software of Micro Foam drilling fluid density changes with the temperature, pressure and provide guidance for safe drilling. Field application shows that the system has the advantages of simple preparation,convenient maintenance, easy transformation, drilling fluid properties can meet the requirements of drilling technology, To ensure the safe, fast, and high quality drilling of oil and gas,reduce pollution,improve the productivity of a single well.

Drilling Fluid Development and Performance Evaluation of Deep and Ultra-Deep High-Density Saturated Brine

2012 ◽  
Vol 524-527 ◽  
pp. 1382-1388
Author(s):  
Ping Quan Wang ◽  
Yang Bai ◽  
Gang Peng ◽  
Zhi Wei Qian
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
High Density ◽  
Deep Drilling ◽  
Fluid System ◽  
Experimental Conditions ◽  
Performance Factors ◽  
Complex Formulation ◽  
Deep Well ◽  
Processing Optimization

Due to the high temperature , great pressure and complex lithology of super-deep well bottom, there exist such problems such as high solid concentration, multiple but inaccurate treating chemicals, complex formulation with instability of drilling fluid system, resulting in a frequent occurrence of underground complex accident and a waste of a lot of manpower and material resources. Therefore, based on the analysis of performance factors of ultra-deep drilling fluid system, the approach of regulating water based drilling fluid properties of super-deep well has been found. Moreover, through screening and processing optimization of treating chemicals of ultra-deep well by single-factor method, three sets of anti-high-density and anti-high-temperature saturated brine drilling fluid systems with few kinds of treating chemicals, concise and simplified system, including: ① saturated brine drilling fluid with anti-temperature 180 °C and density 2.40 g/cm3 ; ② saturated brine drilling fluid with anti-temperature 200 °C and density 2.40g/cm3; ③ saturated brine drilling fluid with anti-temperature 220 °C and density 2.40g/cm3 . After the the evaluation of the overall performance of these three systems under respective experimental conditions, the results show that all of these systems have such advantages as good and strong rheology, water loss building capacity, inhibition, lubricity and blocking ability, etc, which could meet the requirements of ultra-deep drilling under different circumstances.

Research and Development of a New Type of Water-Based Drilling Fluid

2012 ◽  
Vol 486 ◽  
pp. 464-471
Author(s):  
Kai He Lv ◽  
Tao Shi ◽  
Xue Dong Wu
Keyword(s):  
Drilling Fluid ◽  
Solid Content ◽  
Functional Treatment ◽  
Soluble Salts ◽  
Fluid System ◽  
Water Based ◽  
Treatment Agent ◽  
New Type ◽  
Repeated Use ◽  
Filtration Properties

To solve the problems of conventional water-based drilling fluid, a new type of water-based drilling fluid system that comprises of water, multi-functional treatment agent and soluble salts is developed. Multi-functional treatment agent provides the necessary properties and soluble salt maintains the required density. The composition of the drilling fluid is simple and it is easy to maintain. This new drilling fluid has the advantages of good rheology and filtration properties, strong plugging and inhibiting abilities, low solid content, pollution-free, wide adaptability, easy preparation and repeated use. It is a new type of drilling fluid system.

Study of Drilling Fluid System of Resisting the High Temperature of 220 Degrees

2013 ◽  
Vol 753-755 ◽  
pp. 130-133
Author(s):  
Hui Hong Luo ◽  
Ze Hua Wang ◽  
Yu Xue Sun ◽  
Han Jiang
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Fluid Loss ◽  
Borehole Stability ◽  
Fluid System ◽  
Well Drilling ◽  
Deep Well ◽  
Materials Used ◽  
Loss Control ◽  
Determine System

Focus on the high temperature rheological stability and the fluid loss control of resistance to high temperature drilling fluid system, further determine system formula and the formula of the high temperature drilling fluid system should be optimized. Eventually, a kind of organo-silica drilling fluid system of excellent performance which is resistant to high temperature of 220 degrees has been developed, and the system performances have been evaluated. The high temperature-resistant organo-silica drilling fluid system is of good shale inhibition, lubricity and borehole stability. The fluid loss is low and the filter cake is thin and tight, which can effectively prevent bit balling. The sand-carrying ability is good and the rheological property is easy to control. The performances of drilling fluid remain stable under high salinity and the system can resist the pollution of 6%NaCl and 0.5%CaC12. The materials used in this system are non-toxic, non-fluorescent and suitable for deep well drilling.

New Environmentally Safe High-Temperature Water-Based Drilling-Fluid System

1999 ◽  
Vol 14 (03) ◽  
pp. 185-189 ◽  
Author(s):  
C.J. Thaemlitz ◽  
A.D. Patel ◽  
George Coffin ◽  
Lee Conn
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Fluid System ◽  
High Temperature Water ◽  
Water Based ◽  
Environmentally Safe ◽  
Temperature Water

Study on Horizontal Wells and ERW Drilling Technology of Carrying Cuttings

2012 ◽  
Vol 204-208 ◽  
pp. 397-400
Author(s):  
Cha Ma ◽  
Long Li ◽  
Yu Ping Yang
Keyword(s):  
Drilling Fluid ◽  
Horizontal Wells ◽  
Petroleum Exploration ◽  
Drilling Fluids ◽  
Fluid System ◽  
Exploration And Production ◽  
Drilling Technology ◽  
Plastic Ratio ◽  
New Type ◽  
Good Heat Resistance

Hole cleaning was very difficult in horizontal wells and extended reach wells (ERW), which was the technical bottleneck in raising the progress and success rate of petroleum exploration and production at present. A new type of treating agent for drilling fluid (CNRJ), designed for horizontal wells and extended-reach wells, was synthesized. CNRJ was added to drilling fluids, and the rheological properties, temperature-resisting property and suspension performance of drilling fluid system were analysed. The results indicate that CNRJ has good compatibility with drilling fluid system, and the dynamic plastic ratio of drilling fluid system can be adjusted from 0.20 to 1.12. In addition, the drilling fluid system has good static suspension ability for cuttings, good heat resistance and pollution resistance.

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.

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