A Multi-Function Agent Used in Drilling Fluid and Completion Fluid MFA-1

2011 ◽  
Vol 335-336 ◽  
pp. 491-497 ◽  
Author(s):  
Ping Quan Wang ◽  
Zong Xue Yu ◽  
Da Yin ◽  
Hong Jun Liang ◽  
Kun Bin Yang
Keyword(s):  
Drilling Fluid ◽  
Drill Pipe ◽  
Economic Benefits ◽  
Functional Treatment ◽  
Social Benefits ◽  
Production Well ◽  
Well Production ◽  
Treatment Agent ◽  
Well Development

In order to take exploratory well, production well ( development well), and reservoir p-retection into account. Multi-functional treatment agent used in drilling fluid and completion flui-d which called MFA-1 has been successfully developed by the equilibrium principle of dispersion and accumulation. The result shows that MFA-1 is fluorescenceless and low (no)toxicity. Also, it has many perfect properties such as filtration reducing, lubrication, anti-collapsing, plugging, re-servoir protection, strong anti-temperature (＞150°C) ,strong anti-salt,ect. Its whole effect is bett-er than sulphonating asphalts HL-Ⅱ and SAS.So MFA-1 is a good succedaneum of sulphonating asphalts.In more than 20 wells of Tarim Oilfield,drilling fluid and completion fluid which prepared with MFA-1 has been successfully used to solve many problems. Such as drill pipe sticking w-hile testing and the underground complex incidents,ect. As a result,it takes good social benefits a-nd good economic benefits.

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.

Economic benefit of shale gas exploitation based on back propagation neural network

2020 ◽  
Vol 39 (6) ◽  
pp. 8823-8830
Author(s):  
Jiafeng Li ◽  
Hui Hu ◽  
Xiang Li ◽  
Qian Jin ◽  
Tianhao Huang
Keyword(s):  
Neural Network ◽  
Shale Gas ◽  
Bp Neural Network ◽  
Large Scale ◽  
Linear Prediction ◽  
Back Propagation ◽  
Back Propagation Neural Network ◽  
Economic Benefits ◽  
Gas Well ◽  
Well Production

Under the influence of COVID-19, the economic benefits of shale gas development are greatly affected. With the large-scale development and utilization of shale gas in China, it is increasingly important to assess the economic impact of shale gas development. Therefore, this paper proposes a method for predicting the production of shale gas reservoirs, and uses back propagation (BP) neural network to nonlinearly fit reservoir reconstruction data to obtain shale gas well production forecasting models. Experiments show that compared with the traditional BP neural network, the proposed method can effectively improve the accuracy and stability of the prediction. There is a nonlinear correlation between reservoir reconstruction data and gas well production, which does not apply to traditional linear prediction methods

Impact of PAU Tree Growers Association of Punjab in Terms of Economic, Personal, Technical and Social Benefits

2020 ◽  
pp. 560-564
Keyword(s):  
Sample Size ◽  
Economic Benefits ◽  
Social Benefits ◽  
Interview Schedule

The present study was undertaken to determine the benefits derived by the respondents being a member of the PAU Tree Growers Association with a sample size of a total of 80 members of the association. The data were collected using an interview schedule pertaining to the benefits derived by the members. The results of the study revealed that the majority of the respondents had derived high technical benefits (96.25 percent), high personal benefits (86.25 percent), high social benefits (70 percent), and medium economic benefits (51.25 percent). Between the various benefits derived by them, technical benefits emerged as the major benefits (mean score =142.4) followed by social benefits (mean score=140.45), personal benefits (mean score=133), and economic benefits (mean score=98.44). Overall the members obtained high benefits from the association (56.25 percent).

Pipe stick problems of deep well drilling

2021 ◽  
Vol 66 (05) ◽  
pp. 192-195
Author(s):  
Rövşən Azər oğlu İsmayılov ◽  
Keyword(s):  
Drilling Fluid ◽  
Drill Pipe ◽  
Drill String ◽  
Differential Pressure ◽  
Drilling Mud ◽  
Fluid Circulation ◽  
Well Drilling ◽  
Deep Well ◽  
Pressure Pipe ◽  
Bottomhole Pressure

The aricle is about the pipe stick problems of deep well drilling. Pipe stick problem is one of the drilling problems. There are two types of pipe stick problems exist. One of them is differential pressure pipe sticking. Another one of them is mechanical pipe sticking. There are a lot of reasons for pipe stick problems. Indigators of differential pressure sticking are increase in torque and drug forces, inability to reciprocate drill string and uninterrupted drilling fluid circulation. Key words: pipe stick, mecanical pipe stick,difference of pressure, drill pipe, drilling mud, bottomhole pressure, formation pressure

Scaling Formulae for the Wellbore Hydraulics Similitude with Drill Pipe Rotation and Eccentricity

2021 ◽  
Author(s):  
Thad Nosar ◽  
Pooya Khodaparast ◽  
Wei Zhang ◽  
Amin Mehrabian
Keyword(s):  
Power Law ◽  
Flow Rate ◽  
Annular Flow ◽  
Rotation Speed ◽  
Drilling Fluid ◽  
Drill Pipe ◽  
Flow Loop ◽  
Annular Flows ◽  
Fluid Rheology ◽  
Pipe Rotation

Abstract Equivalent circulation density of the fluid circulation system in drilling rigs is determined by the frictional pressure losses in the wellbore annulus. Flow loop experiments are commonly used to simulate the annular wellbore hydraulics in the laboratory. However, proper scaling of the experiment design parameters including the drill pipe rotation and eccentricity has been a weak link in the literature. Our study uses the similarity laws and dimensional analysis to obtain a complete set of scaling formulae that would relate the pressure loss gradients of annular flows at the laboratory and wellbore scales while considering the effects of inner pipe rotation and eccentricity. Dimensional analysis is conducted for commonly encountered types of drilling fluid rheology, namely, Newtonian, power-law, and yield power-law. Appropriate dimensionless groups of the involved variables are developed to characterize fluid flow in an eccentric annulus with a rotating inner pipe. Characteristic shear strain rate at the pipe walls is obtained from the characteristic velocity and length scale of the considered annular flow. The relation between lab-scale and wellbore scale variables are obtained by imposing the geometric, kinematic, and dynamic similarities between the laboratory flow loop and wellbore annular flows. The outcomes of the considered scaling scheme is expressed in terms of closed-form formulae that would determine the flow rate and inner pipe rotation speed of the laboratory experiments in terms of the wellbore flow rate and drill pipe rotation speed, as well as other parameters of the problem, in such a way that the resulting Fanning friction factors of the laboratory and wellbore-scale annular flows become identical. Findings suggest that the appropriate value for lab flow rate and pipe rotation speed are linearly related to those of the field condition for all fluid types. The length ratio, density ratio, consistency index ratio, and power index determine the proportionality constant. Attaining complete similarity between the similitude and wellbore-scale annular flow may require the fluid rheology of the lab experiments to be different from the drilling fluid. The expressions of lab flow rate and rotational speed for the yield power-law fluid are identical to those of the power-law fluid case, provided that the yield stress of the lab fluid is constrained to a proper value.

Treatment of Drilling Fluid to Combat Drill Pipe Corrosion

CORROSION ◽  
1990 ◽  
Vol 46 (9) ◽  
pp. 778-782 ◽  
Author(s):  
M. A. Al-Marhoun ◽  
S. S. Rahman
Keyword(s):  
Drilling Fluid ◽  
Drill Pipe

scholarly journals Regulation of Lifelong in Education and İts Economic, Social Benefits

2021 ◽  
Vol 12 (6) ◽  
pp. 1298-1310
Author(s):  
Allahyar Muradov Et al.
Keyword(s):  
Human Capital ◽  
Social Problems ◽  
Labour Productivity ◽  
Economic Benefits ◽  
Social Benefits ◽  
Development Economic ◽  
Knowledge Based ◽  
The Future ◽  
The Impact

Sustainability in education is important in ensuring knowledge-based and innovation-driven development and human capital reproduction. Sustainability is particular important for the prevention of some economic and social problems that may arise in the future and raising the competitiveness of the country. Sustainability - the prevention as some of economic and social problems that may arise in the future is of particular importance in raising the country's competitiveness. The aim of the research is to estimate the economic-social benefits of regulation of sustainability in education and to give the suggestions in the direction of the improvement of the effectiveness of the regulation. The impact of continuity in education on the formation and development of human capital, knowledge-based society building, labour intelligence, competitiveness and the improvement of welfare are assessed cross-country in the article. In particular, in recent years, researches and politicians have analysed the ‘4th industry’ revolution (‘Industry 4.0’) ‘the benefits and losses in the medium and long-term perspective and its interaction with the sustainability of education. Here are two issues: 1) socioeconomic disadvantages of ensuring sustainability in education, 2) socioeconomic advantages of ensuring sustainability in education. Firstly, it is analysed the impacts of increased unemployment, reduction of employment income, declining social security and welfare that will be resulted as problems on economic development. Secondly, it is analysed (ensuring in sustainability condition) the distinguished factors of rapid technological innovation, labour productivity, repatriation of human capital, raising competitiveness on the international level, innovation-based development, economic benefits of knowledge and skills.

scholarly journals Classification and ways of China urban express terminal distribution service modes

2021 ◽  
Vol 236 ◽  
pp. 04030
Author(s):  
Wang Shengjin ◽  
Chen Ying
Keyword(s):  
Urban Transportation ◽  
Economic Benefits ◽  
Social Benefits ◽  
Current Status ◽  
Urban Residents ◽  
Consumer Experience ◽  
Qualitative Comparison ◽  
Service Models ◽  
Delivery Services ◽  
Express Delivery

In order to meet the diversified consumption needs of urban residents, many new urban express terminal distribution service models have emerged, from the traditional “door to door” service to the current service station and smart cabinets and other service modes coexist. The diversification of urban express delivery service models can not only bring customers a better consumer experience, but also help to further improve the consumption level of urban residents. Through qualitative comparison and analysis of existing urban express terminal distribution service models, this paper can provide a reference for e-commerce companies and logistics companies to choose the urban express terminal distribution service models suitable for their own development. Improving the current status of urban express delivery services will help resolve the contradiction between customer experience demands and enterprises, bring economic benefits to enterprises, and also help improve urban transportation and bring social benefits.

scholarly journals Institutional Obstacles and Solutions to the Integration and Development of Cultural Tourism in Chongqing

2020 ◽  
Vol 4 (1) ◽  
pp. 9
Author(s):  
Shaoyuan Wang
Keyword(s):  
Cultural Tourism ◽  
Economic Benefits ◽  
Current Situation ◽  
Cultural Development ◽  
Social Benefits ◽  
Cultural Industries ◽  
Cultural System ◽  
Basic Purpose ◽  
The Relationship ◽  
General Secretary

<p>General Secretary Jinping Xi pointed out that "In the process of promoting the reform of cultural system and the prosperity and development of cultural undertakings and industries, the relationship between ideological attributes and industrial attributes, social benefits and economic benefits should be grasped." The basic purpose of the establishment of the Ministry of Culture and Tourism in China is to promote the integration and development of cultural undertakings, cultural industries and tourism, to guide tourism with culture and to promote cultural development with tourism. Based on the current situation of the integration and development of cultural tourism in Chongqing, this paper analyzes its four major institutional obstacles and puts forward specific solutions.</p>

scholarly journals Research on Gas-liquid Mixed Transportation Technological Adaptability: A Case Study of the Western Sichuan Gas Field

2017 ◽  
Vol 10 (1) ◽  
pp. 37-47
Author(s):  
Qingsha Zhou ◽  
Kun Huang ◽  
Yongchun Zhou
Keyword(s):  
Flow Simulation ◽  
Field Tests ◽  
Economic Benefits ◽  
Gas Production ◽  
Simulation Software ◽  
Rapid Decline ◽  
Gas Field ◽  
Western Sichuan ◽  
Field Development ◽  
Well Production

Background: The western Sichuan gas field belongs to the low-permeability, tight gas reservoirs, which are characterized by rapid decline in initial production of single-well production, short periods of stable production, and long periods of late-stage, low-pressure, low-yield production. Objective: It is necessary to continue pursuing the optimization of transportation processes. Method: This paper describes research on mixed transportation based on simplified measurements with liquid-based technology and the simulation of multiphase processes using the PIPEPHASE multiphase flow simulation software to determine boundary values for the liquid carrying process. Conclusion: The simulation produced several different recommendations for the production and maximum multiphase distance along with difference in elevation. Field tests were then conducted to determine the suitability of mixed transportation in western Sichuan, so as to ensure smooth progress with fluid metering, optimize the gathering process in order to achieve stable and efficient gas production, and improve the economic benefits of gas field development.

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