Rapid calculation method for reconstruction volume of compact oil reservoir volume fractured horizontal well
A technology for volume stimulation and volume fracturing, which is applied in calculation, computer-aided design, fluid extraction, etc., can solve the problems of long shut-in time and slow fitting process of volume stimulation, and achieve simple and fast calculation method, strong applicability, The effect of increasing the calculation speed
Active Publication Date: 2021-06-18
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to provide a fast calculation method for the stimulation volume of volume fracturing horizontal wells in tight oil reservoirs, which is used to solve the problem of determining the stimulation volume in the prior art. Problems with long well time or slow fitting process
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Embodiment 1
[0078] (1) Basic parameters
[0079] The basic parameters collected are shown in Table 1.
[0080] Table 1 basic data sheet
[0081]
[0082] (2) Calculation results
[0083] by image 3 It can be obtained from the return line intercept in the failure flow stage to 4.2492, so the reform volume is 5.02 × 10 6 M 3 .
[0084] When the pressure propagation reaches the boundary of the transformation zone, it can be stabilized, so that the reconstruction volume can be determined using the production data binding to the stable flow stage.
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The invention relates to a rapid calculation method for the reconstruction volume of a compact oil reservoir volume fractured horizontal well, which comprises the following steps: step 1, collecting production data and calculating required basic parameters, the production data comprising a pressure history and a flow history, wherein the basic parameters comprise the original pressure, the comprehensive compression coefficient, the porosity and the fluid volume coefficient of the stratum; 2, drawing a relation curve of the regularized yield and the material balance time; and 3, calculating the transformation volume by using a depletion flow stage pressure change formula. Linear regression is carried out by utilizing production data in a linear flow stage, and the permeability is determined by combining a linear flow equation. According to the invention, the relation curve is drawn by directly utilizing the existing production dynamic data, the transformation volume is determined in combination with the depletion flow stage pressure change formula, well shut-in and curve fitting are not needed, and the calculation method is simple and rapid.
Description
Technical field: [0001] The present invention relates to the field of non-constant oil and gas development, and is specifically involved in a rapid calculation method of a retrofitting volume of a dense reservoir volume fracturing level. Background technique: [0002] The geological conditions of the dense reservoir are complex, the permeability is extremely low, and the non-uniformity is strong. Due to the mining of the routine method, the intuel storage capacity is low, and the volume fracturing technology has become an important means of improving the recovery. By volume fracturing, it can generate complex seam nets near the main crack, forming the reservoir properties, which greatly improves the overall seepage speed of the reservoir fluid, can effectively improve the seepage condition of the reservoir, improve the oil well production capacity . [0003] Reservoir retrofit volume is an important parameter for evaluating the effect of volume fracturing. The accurate quantizati...
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Patent Timeline
Login to View More IPC IPC(8): G06F30/28E21B43/26G06F113/08G06F119/14
CPCE21B43/26G06F30/28G06F2113/08G06F2119/14
Inventor 尹洪军袁鸿飞付春权邢翠巧徐国涵
Owner NORTHEAST GASOLINEEUM UNIV
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