Detecting method for number of one-section-multi-cluster fracturing fractures in horizontal well
A diagnostic method and horizontal well technology, which is applied in the fields of earthwork drilling, wellbore/well components, electrical digital data processing, etc. It can solve the problems of high cost of microseismic monitoring, restrictions on the popularization and application of fracture monitoring technology, and inability to guide on-site construction in real time, etc. problem, to achieve the effect of guaranteeing the transformation effect and ensuring the effectiveness
Active Publication Date: 2019-02-15
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
On the one hand, the cost of microseismic monitoring is expensive, and it is impossible to monitor every well. On the other hand, the data obtained by monitoring needs to be processed for a period of time, and it cannot guide the construction on site in real time. These limit the popularization and application of fracture monitoring technology.
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[0027] see Figure 1 to Figure 3 Shown:
[0028] The method for diagnosing the number of multi-cluster fracturing fractures in a section of a horizontal well provided by the present invention is as follows:
[0029] A method for diagnosing the number of multi-cluster fracturing fractures in a section of a horizontal well provided by the present invention comprises the following steps:
[0030] Step 1: Collect the basic data of the fractured wells in the block with the same reservoir development characteristics as the horizontal wells, and obtain the operation pressure data of single-layer / single-cluster fracturing, formation fracture pressure, fracture extension pressure, and operation displacement Parameters related to the net pressure value;
[0031] Step 2: Select adjacent vertical wells / pilot wells in the block with the same reservoir development characteristics as horizontal wells in the same layer, establish a fracture pressure calculation model based on well logging d...
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The invention discloses a detecting method for the number of one-section-multi-cluster fracturing fractures in a horizontal well. The detecting method includes the follows steps that firstly, basic data of a fracturing well with the same reservoir development characteristics and the same layer as the horizontal well in a block are collected; secondly, a fracture pressure calculation model is established based on the logging data; thirdly, the fracture pressures of one-section-multi-cluster fracturing points are predicted by using the fracture pressure prediction model obtained in the second step; fourthly, the closure times and closure pressures of the fractures and fracture fluid loss characteristic information are analyzed and judged by testing pressure drop data of fracturing; fifthly,G function analysis is performed on construction data collected from the fracturing test by using PT or a Stimplan fracturing software; and sixthly, opening and extension conditions of the one-section-multi-cluster fracturing fractures are judged, design optimization of the remaining fracturing sections is conveniently guided. The detecting method for the number of one-section-multi-cluster fracturing fractures in the horizontal well has the beneficial effects that the number of the one-section-multi-cluster fracturing fractures in the horizontal well can be detected in real time and effectively, the effectiveness of one-section-multi-cluster is ensured, and the effect of horizontal well reconstruction is ensured.
Description
technical field [0001] The invention relates to a method for diagnosing the number of fracturing fractures, in particular to a method for diagnosing the number of multi-cluster fracturing fractures in a section of a horizontal well. Background technique [0002] At present, in the development process of unconventional gas reservoirs such as tight oil and gas and shale gas, horizontal well fracturing is a necessary production measure. Staged fracturing of horizontal wells is of great significance in increasing recoverable reserves, improving single well productivity and stable production time. With the development of petroleum equipment technology, the staged fracturing process of horizontal wells has gradually developed from the initial one-stage fracturing to two-stage fracturing, and one-stage multi-stage fracturing. One-stage multi-cluster fracturing can effectively reduce the number of fracturing stages on the premise of ensuring the volume of reservoir stimulation, red...
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Login to View More IPC IPC(8): E21B43/26E21B49/00G06F17/50
CPCE21B43/26E21B49/00G06F30/20
Inventor 张冲夏富国高春华高志华王娟娟宋宪实郭显赋张颖超杨靖
Owner CHINA PETROLEUM & CHEM CORP