Development and adjustment method for multi-layer sandstone oil reservoir with developed scattered sand bodies

A technology for sandstone reservoirs and adjustment methods, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., and can solve the problem of uneconomical adjustment mode

Active Publication Date: 2018-07-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, under the current low oil price conditions, it is no longer economically feasible to improve and adjust the overall well pattern based on the investment in new wells and supporting surface reconstruction; the upper and lo

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  • Development and adjustment method for multi-layer sandstone oil reservoir with developed scattered sand bodies
  • Development and adjustment method for multi-layer sandstone oil reservoir with developed scattered sand bodies
  • Development and adjustment method for multi-layer sandstone oil reservoir with developed scattered sand bodies

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Embodiment Construction

[0045] 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.

[0046] like figure 1 as shown, figure 1 It is a flow chart of a specific embodiment of the multi-layer sandstone reservoir development and adjustment method developed by scattered sand bodies of the present invention. This method considers that the reservoir has many small layers, is in the development period of ultra-high water cut, and also considers the development form with imperfect local well pattern.

[0047] In step 101, carry out fine geological research on geological characteristics such as stratigraphic characteristics, structural characteristics, reservoir physical properties, and reservoir characteristics of the research block, and establish a fine reservoir geological model on this basis to finely characterize the development status of the...

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Abstract

The invention provides a development and adjustment method for a multi-layer sandstone oil reservoir with developed scattered sand bodies. The development and adjustment method comprises the followingsteps that 1, fine reservoir geological research and geological modeling are carried out; 2, a numerical model is established; 3, the numerical model is combined with an oil reservoir engineering method to study the distribution of remaining oil; 4, a multi-round series of strata alternating feasibility study is carried out; 5, the series of strata alternating resource is evaluated; 6, a multi-round series of strata alternating scheme is designed; and 7, index prediction and economic evaluation are carried out, and the scheme is implemented. The development and adjustment method for the multi-layer sandstone oil reservoir with the developed scattered sand bodies has good practicability for improving the reserve control degree and oil recovery speed in the late stage of ultra-high water cut of the multi-layer oil reservoir, under the condition of low oil price, the recovery ratio of the multi-layer reservoir in the late stage of the ultra-high water cut can be economically and effectively improved, and the development and adjustment method provides support for stable production and production increase in old oil fields.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for adjusting the development of multi-layer sandstone reservoirs with scattered sand bodies. Background technique [0002] In the process of oilfield development, multi-layer sandstone reservoirs with scattered sand bodies have poor vertical superposition, poor well pattern perfection, and low degree of reserve control, resulting in long-term fixed historical streamlines and high water consumption zones in some areas , Ineffective water circulation intensifies, leading to serious water flooding of oil layers, high water cut in oil wells, poor adjustment effect of conventional operations, and it is difficult to enhance oil recovery under current well pattern conditions. Due to the poor integrity of the existing well pattern and the large difference in remaining oil saturation, there are remaining oil enrichment areas at the edge of the sand body and the top ...

Claims

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Application Information

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IPC IPC(8): E21B43/14E21B43/20E21B49/00
CPCE21B43/14E21B43/20E21B49/00
Inventor 杨盛波黄迎松郭振海曾显香马鹏陈德坡吴媛媛张以根张俊李响吕远
Owner CHINA PETROLEUM & CHEM CORP
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