New Strong Inhibitory Polyamine Drilling Fluid System Research in Yubei Area

Yubei area exist thick mud shale, mudstone, gypsum mudstone and high pressure brine formation. In the course of drilling, the problems are most conspicuous which include well bore instability, bit balling and so on. In allusion to complex formation and complex accident, the polyamine form strong inhibitory polyamine collapse prevention drilling fluid on the basis of KCl-polysulfonate drilling fluid system was used in Yubei area. After the analysis on the mechanism of the strong inhibitory polyamine polymer drilling fluid system, the polyamine performance evaluation test made in laboratory shows that the drilling fluid system has good rheological property, high temperature resistance, clay and salt water pollution resistance. This drilling fluid system cooperate with KCl improve the ability of inhibition of drilling fluid, meet the requirements of stabilize borehole wall, which carried on the field test in YB A well has obtained good application effect.

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Impact of the drilling fluid system on the effectiveness of a high pressure jetting assisted rotary drilling system

Heliyon ◽

10.1016/j.heliyon.2020.e04179 ◽

2020 ◽

Vol 6 (6) ◽

pp. e04179

Author(s):

Timon Echt ◽

Thomas Stoxreiter ◽

Johann Plank

Keyword(s):

High Pressure ◽

Drilling Fluid ◽

Fluid System ◽

Rotary Drilling ◽

Drilling System

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.730.231 ◽

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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Shale Stability Evaluation and Leakage Control of High Density Clay Free Brine Drilling Fluid

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.861.395 ◽

2020 ◽

Vol 861 ◽

pp. 395-400

Author(s):

Cong Bing Chang ◽

Yi Hang Zhang ◽

Xu Hui Song

Keyword(s):

Deep Water ◽

Salt Water ◽

Drilling Fluid ◽

High Density ◽

Stability Evaluation ◽

Evaluation Test ◽

The Stability ◽

Fluid Design ◽

Effect Test ◽

Selection Of

In view of the particularity of deep-water thick rock reservoir, in order to deal with the problem of poor reservoir stability and serious loss of drilling fluid in the drilling fluid design of M oilfield, this paper has carried out the reservoir inhibitor optimization evaluation test for the salt resistant high-density drilling fluid which has been designed and optimized, and also carried out the appropriate selection of plugging materials and plugging effect test for the loss of salt gypsum layer. The results show that the stability of saturated salt water drilling fluid in the salt gypsum layer with shale can be effectively ensured by the combination of CPI and uhib inhibitors within 2%. At the same time, FloSeal, a new plugging agent for 1-2mm fractures, is selected, and its plugging loss capacity is stably controlled below 30ml.

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Implementation of artificial intelligence and support vector machine learning to estimate the drilling fluid density in high-pressure high-temperature wells

Energy Reports ◽

10.1016/j.egyr.2021.06.092 ◽

2021 ◽

Vol 7 ◽

pp. 4106-4113

Author(s):

Rahmad Syah ◽

Naeim Ahmadian ◽

Marischa Elveny ◽

S.M. Alizadeh ◽

Meysam Hosseini ◽

...

Keyword(s):

Artificial Intelligence ◽

Machine Learning ◽

Support Vector Machine ◽

High Pressure ◽

High Temperature ◽

Drilling Fluid ◽

Support Vector ◽

Fluid Density ◽

High Pressure High Temperature

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Efficient Solar Desalination System Using Humidification/Dehumidification Process

Journal of Solar Energy Engineering ◽

10.1115/1.4027725 ◽

2014 ◽

Vol 136 (4) ◽

Cited By ~ 15

Author(s):

Adel M. Abdel Dayem

Keyword(s):

High Pressure ◽

Heat Source ◽

System Performance ◽

Salt Water ◽

Weather Conditions ◽

Water Production ◽

High Pressure Pump ◽

Solar Desalination ◽

Flat Plate Collector ◽

The Cost

An innovative solar desalination system is successfully designed, manufactured, and experimentally tested at Makkah, 21.4 degN. The system consists of 1.15 m2 flat-plate collector as a heat source and a desalination unit. The unit is about 400 l vertical cylindrical insulated tank. It includes storage, evaporator, and condenser of hot salt-water that is fed from the collector. The heated water in the collector is raised naturally to the unit bottom at which it is used as storage. A high pressure pump is used to inject the water vertically up through 1-mm three nozzles inside the unit. The hot salt-water is atomized inside the unit where the produced vapor is condensed on the inner surfaces of the unit outer walls to outside. The system was experimentally tested under different weather conditions. It is obtained that the system can produce about 9 l a day per quadratic meter of collector surface area. By that it can produce about 1.6 l/kWh of solar energy. Moreover, the water temperature has a great effect on the system performance although the scaling possibility is becoming significant. By that way the cost of a liter water production is relatively high and is obtained as 0.5 US$.

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The Application of PEM Drilling Fluid System in Environmentally Sensitivity Area

10.2118/72307-ms ◽

2001 ◽

Author(s):

Xu Shaocheng ◽

Xiaojian Jin ◽

Li Zili ◽

Xinjing Xiang

Keyword(s):

Drilling Fluid ◽

Fluid System

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Application of Benzotriazole Corrosion Inhibitor in Synthetic-Based Drilling Fluid and its Overall Impact in Improving Drilling Fluid Functionality

10.2118/205055-ms ◽

2021 ◽

Author(s):

Zhao Xionghu ◽

Saviour Bassey Egwu ◽

Deng Jingen ◽

Miao Liujie

Keyword(s):

Corrosion Rate ◽

Corrosion Inhibitor ◽

Coefficient Of Friction ◽

Hot Rolling ◽

Drilling Fluid ◽

Effect Of Temperature ◽

Fluid Loss ◽

Fluid Composition ◽

Fluid System ◽

Before And After

Abstract The effect of corrosion inhibitor Benzotriazole on synthetic-based mud system was studied. Rheological performance of the benzotriazole enhanced synthetic-based fluid system was studied and compared against the base mud. To study its effect on dynamic wellbore conditions, different drilling fluid compositions were placed in a hot rolling oven for 16 hours at temperatures 150 °C and 170°C and the effect of temperature on mud properties were studied. Tests carried out include rheological test (before and after hot rolling), filtrate pH, lubricity test, and fluid loss test. The corrosion penetration rate was studied using the weight loss method. Based on experiment results, the synthetic-based mud system which comprised of benzotriazole displayed a reduction in coefficient of friction up to 95.93%. At ambient condition, optimal ratio of mineral oil:benzotriazole (M:B) which gives best lubricity performance on synthetic-based mud system is 80:20. This leads to improved corrosion inhibition and lubricity of the synthetic-based fluid by reducing the coefficient of friction up to 90.13%. Increased temperature led to further decrease in coefficient of friction with a % torque reduction of 95.93 displayed by the 80:20 ratio M:B mud composition at 170 °C. Significant alterations of the mud composition rheological and fluid loss parameters before and after exposure to high temperature in hot rolling oven were not observed. pH values were maintained ≥7 at the dynamic conditions highlighting solubility of the formulated fluid composition and absence of contaminants which can pose significant threats to the rates of corrosion in drill pipes. Increasing the concentration of Benzotriazole led to a reduction in corrosion rate. However, as the temperature effect increased, the corrosion rate elevated. Based on results from this investigation, it was concluded that Benzotriazole can be applied as a corrosion inhibitor in a synthetic-based drilling fluid system as an alternative corrosion inhibitor without significant alteration of the base mud properties. Benefits of this will be the optimization of extended reach well drilling operations due to excellent lubricity performance, corrosion rate reduction, compatibility with HPHT wellbore condition and fluid loss control.

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