A productivity well testing method
A productivity equation and well test interpretation technology, applied in earthwork drilling, wellbore/well components, non-mechanical drive locks, etc., can solve the problems of poor practicability and the need for months or even years to stabilize the flow, etc. Achieve the effect of improving the success rate, reasonable well test interpretation model and good practicability
Active Publication Date: 2018-03-30
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, for low-permeability oil and gas reservoirs (such as shale gas reservoirs, shale oil reservoirs, tight oil and gas reservoirs, etc.), it often takes a long time to achieve stable flow in well testing (for example, for shale reservoirs, it takes several months or even several years), so the practicability of the existing production testing method is very poor
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0047] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
[0048] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.
[0049] In addition, the steps shown in the flow dia...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a productivity well testing method, which comprises: a well test interpretation model construction step, which is to construct a well test interpretation model by coupling formation seepage and wellbore flow; a model parameter value determination step, to perform a shut-in pressure recovery test, According to the test results and the well test interpretation model, determine the value of the model parameters in the well test interpretation model; the working model determination step, according to the model parameters, determine the time required for the well to be analyzed to reach a stable flow, and determine the working model according to the time length; productivity information The determination step is to determine the state parameters of the well to be analyzed under the working model according to the model parameters of the well test interpretation model, and determine the productivity information of the well to be analyzed according to the state parameters. The invention simplifies the operation process by avoiding multiple well opening and closing, reduces the probability of test failure caused by multiple well opening and closing, and improves the success rate of the test. In addition, the method eliminates the need to achieve steady flow, thereby shortening test times.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a productivity well testing method. Background technique [0002] Productivity well testing is the most common and accurate method to obtain the open flow of oil and gas wells and establish accurate productivity equations. For the development of oil and gas fields, productivity well testing can not only provide the basis for the determination and adjustment of oil and gas field development plans, but also provide guidance for the reasonable production allocation of oil and gas wells, so as to achieve the purpose of stable, high and reasonable development. At the same time, productivity testing can also predict production dynamics, thus providing decision-making basis for the development and adjustment of oil and gas fields. [0003] The existing productivity well testing methods mainly include systematic well testing method, isochronous well testi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E05B47/06E21B49/08
Inventor 庞伟张同义杜娟毛军贺英吴琼邸德家
Owner CHINA PETROLEUM & CHEM CORP