Tarim Oilfield Branch Company
Tarim Oilfield Branch Company
Xiong Y.,Southwest Petroleum University |
Teng P.,Southwest Petroleum University |
Niu X.-N.,Tarim Oilfield Branch Company |
Cai M.-J.,Tarim Oilfield Branch Company
Well Testing | Year: 2017
According to the conventional analytical theory of well test limited by the simplified model, it cannot meet such needs to solve the seepage of fracture cavity reservoirs, the well test interpretation model of series double cavity is proposed, the corresponding mathematical model is established,and the Laplace transform and Stehfest numerical inversion algorithm are used to solve the mathematical model. The influences of karst reservoir capacity ratio,size of cave,width of crack,distance of cave on the bottom pressure response are analyzed. The research shows that the response to pressure of Radius of karst cave is similar to karst reservoir capacity ratio,the greater the value,the longer the straight line. The cavern is equal to the expansion of the well diameter and increases the “well bore storage coefficient”; The wider of the crack,the longer the concave is,and the fluid channeling will earlier occur; The distance between the karst cave is longer,the reflection is more backward. The method of well testing interpretation is put forward,which is suitable for the fracture cavity type reservoir,and the practical software isdeveloped. The model is used to interpret a well in the Tarim oilfield,and the results are consistent with the geological model and drilling data. © 2017, The Editorial Department of Well Testing. All right reserved.
Chang B.,Petrochina |
Sun H.,Petrochina |
She J.,Tarim Oilfield Branch Company |
Yang X.,Tarim Oilfield Branch Company |
And 2 more authors.
Well Testing | Year: 2015
There are some problems about back pressure testing data when the deliverability test data is processed in Hetianhe gas field of Tarim basin, test production sequence changes leads to a certain errors to be in results of the analysis. The influence of production sequence to back pressure well test is analyzed on the basis of binomial deliverability formula, four error formulae for production system are given. Combined with field examples, it is recognized that increasing sequence has the smaller error. And increasing geometric factor between productions as far as possible, widening the gap between productions that will help to reduce errors, which provides a basis for the back pressure well test design. ©, 2015, Well Testing. All right reserved.
Zhang C.,Tarim Oilfield Branch Company
Well Testing | Year: 2016
Cementing plug operation at north Tarim area in the Tarim oil field well is confronted with many challenges, such as depth, high temperature, high pressure, complex geological conditions, and. Cementing plug operation has the high risk and difficult, it s easy to have accidents of pole, sausage, no cement plug, which causes the major difficult to operation. In response to these challenges, it needed from vulgar to refinement of cementing plug operation, establish the elaborating management process. Through scientific analysis, design, construction and evaluation of the whole process of cementing plug, the success rate of cement plug is improved effectively, which provides the maximum protection for the life of oil and gas Wells, oil field development, environment protection and so on. © 2016, The Editorial Department of Well Testing. All right reserved.