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Drainage oil exploitation method with harmless sludge reinjection

It is a technology of oil exploitation and harmlessness, which is applied in the direction of exploitation fluid, earthwork drilling, wellbore/well components, etc. It can solve the problems of high processing cost, waste of oil resources, unfavorable environment, etc., and achieve improved oil recovery, increased Economic benefits, the effect of saving investment funds

Inactive Publication Date: 2019-02-22
黄滢芝
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Problems solved by technology

[0009] The purpose of the present invention is to provide a kind of drainage type oil extraction method with sludge reinjection harmless, so as to solve the existing problems in the prior art, such as high processing cost, unfavorable environment and waste of oil resources in oil extraction sludge To solve the problem, a drainage oil extraction method that can exploit underground oil without building a large number of oil wells and ground-related supporting systems, and has a high oil recovery rate

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  • Drainage oil exploitation method with harmless sludge reinjection
  • Drainage oil exploitation method with harmless sludge reinjection
  • Drainage oil exploitation method with harmless sludge reinjection

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] combined with Figure 6~7 , the system applying the method comprises No. 1 area 1 underground, oil pipeline 7, oil channel 2-5, No. 2 area 2, well bottom area 2-1, buffer zone 2-3, automatic gate 2-4, The sand filtering device 2-2 and the control room 5 located on the ground; the No. 1 area 1 is correspondingly located on the upper part of one side of the oil reservoir 3, and is set as a circulation structure, so as to facilitate the lifting of the crude oil from the No. 2 area 2 transported to the joint station 10 located on the ground; as required, the No. 1 area 1 can be set under ten me...

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Abstract

The invention relates to a drainage oil exploitation method with harmless sludge reinjection. According to the drainage oil exploitation method, multiple drainage wells are drilled in batches and stages to penetrate an oil reservoir from the ground and drill through to a second area arranged at the position below the edge of the oil reservoir, after layering, oil and gas floating on the upper layer in the second area are lifted through corresponding pipelines into a corresponding first area located at the position above the oil reservoir, and then the first area transports the lifted oil and gas to a combined station, so as to complete exploitation of the oil in the oil reservoir; and the combined station is a pump station composed of a plurality of parallel connected hydraulic injection pumps, and sludge produced by oil exploitation is injected into an abandoned layer of an oil field. The drainage oil exploitation method specifically includes the following processing steps that (1), the oil exploitation sludge is sampled, and sludge compositions and particle sizes are analyzed; (2), according to analysis results of the sludge compositions, a suspending agent or a curing agent is added in a certain proportion; and (3), according to analysis results of the sludge particle sizes, the depth of a sludge reinjection stratum is determined.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, in particular to a drainage type petroleum exploitation method with sludge reinjection harmless. Background technique [0002] As known, the existing oil extraction technology is to build a large number of oil wells and related supporting systems on the oil field, and then lift the crude oil to the ground by means of self-spraying or mechanical oil recovery, and then send oil to each well through the oil and gas gathering and transportation system of the mine. output of [0003] Collecting, measuring and transporting to the joint processing station, after the treatment of oil, gas and water separation, sand removal and other processes, qualified crude oil can be produced and delivered to users; oil extracted from oilfields will produce a large amount of sludge after oil and water separation, oil mining sludge The composition is extremely complex, mainly composed of emulsified oil, water, an...

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Application Information

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IPC IPC(8): E21B43/16E21B43/20E21B43/24
CPCE21B43/16E21B43/20E21B43/24
Inventor 黄滢芝
Owner 黄滢芝
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