New method for measuring and calculating recoverable exploitable reserves of water flooding oil reservoir
A technology of water-flooding oil and a new method, which is applied in the field of recoverable reserves potential estimation of water-flooding oil reservoirs, and can solve problems such as loss of control of recoverable reserves, shutdown of high water-cut wells, and damage to well pattern integrity.
Inactive Publication Date: 2017-11-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, in the actual development of oilfields, well damage and shutdown of high water-cut wells will inevitably occur, resulting in damage to the integrity of the well pattern and resulting in out-of-control recoverable reserves.
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[0016] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.
[0017] Such as figure 1 as shown, figure 1 It is a flow chart of the new method for measuring and calculating the recoverable reserve potential of the water drive oil reservoir of the present invention.
[0018] Step 101, prepare basic data. Collect and organize the basic data of the water drive reservoirs to be evaluated, including relative permeability curves, underground crude oil viscosity, groundwater viscosity, and unit development indicators.
[0019] Step 103, calculating the theoretical natural lapse rate. According to the oil-water two-phase seepage characteristics, the relationship between the theoretical natural decline rate and the water cut at a certain remaining recoverable oil recovery rate is deduced, and a chart is established. Ac...
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The invention provides a new method for measuring and calculating recoverable exploitable reserves of a water flooding oil reservoir. The new method comprises the following steps: in a first step, basic materials of the water flooding oil reservoir to be evaluated are collected and arranged; in a second step, a plate for a variation relation between theoretical natural progressive decrease rates and water content rates at different residual exploitable reserve oil extraction speeds is built, and the theoretical natural progressive decrease rates are calculated according to the plate; in a third step, whether exploitable reserves are out of control is determined; in a fourth step, theoretical residual exploitable reserve oil extraction speeds are calculated; in a fifth step, according to the theoretical residual exploitable reserve oil extraction speeds, actually controlled exploitable reserves are calculated, and recoverable exploitable reserve potential is measured and calculated. The new method for measuring and calculating the recoverable exploitable reserves of the water flooding oil reservoir can be used for evaluating development effects of the water flooding oil reservoir, the actually controlled exploitable reserves of a mining site unit can be calculated, and recoverable potential of a unit exploitable reserve can be evaluated.
Description
technical field [0001] The invention relates to the field of oil and gas field development, in particular to a new method for measuring and calculating the recoverable reserve potential of a water drive oil reservoir. Background technique [0002] Recoverable reserves refer to the part of the oil reserves recovered from the oil reservoir under the existing technical and economic conditions. It is the most direct and key indicator reflecting the material basis and development potential of the reservoir. The actual production has considerable guiding significance. Over the years, development technicians have done a lot of fruitful research on the calculation method and influencing factors of recoverable reserves. When the oilfield development enters the decline stage, the commonly used methods mainly include water flooding curve method and production decline method. Both methods predict the recoverable reserves of the oil field under the condition of stable water flooding an...
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Login to View More IPC IPC(8): G06Q50/02G06Q10/04
CPCG06Q10/04G06Q50/02
Inventor 肖武徐永春张海燕孙成龙刘新秀张超李东玻李浩吕翔慧
Owner CHINA PETROLEUM & CHEM CORP