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Harmless reinjection treatment method for petroleum exploitation sludge

A technology of harmless treatment and oil extraction, applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of waste of oil resources, unfavorable environment, high treatment cost, etc. The effect of mining rate

Active Publication Date: 2013-08-21
DEZHOU UNITED GASOLINEEUM MACHINERY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a harmless treatment method for re-injection of oil mining sludge, so as to solve the problems of high processing cost, unfavorable environment and waste of oil resources in the oil mining sludge existing in the prior art

Method used

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  • Harmless reinjection treatment method for petroleum exploitation sludge
  • Harmless reinjection treatment method for petroleum exploitation sludge

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Embodiment Construction

[0019] Such as figure 1 and figure 2 As shown, a harmless treatment method for reinjection of oil mining sludge. The mining sludge is crude oil extracted from Shengli Oilfield. After oil-water separation, the resulting oilfield mining sludge is sampled and analyzed. 35%, crude oil is about 29%, water is about 35%, the muddy composition is mainly coarse-fine siltstone, of which the particle size is less than 30 microns, accounting for 83%, after deoiling and dehydrating, passing through a standard sieve, 75% The above can pass through the 200 mesh sieve, and 100% can pass through the 100 mesh sieve; add a suspending agent of 0.1% of the quality of the oil mining sludge to the mining sludge, and add a solidifying agent of 0.14% of the quality of the oil mining sludge in the mining sludge; The pumping station composed of parallel hydraulic injection pumps sends the oil mining sludge to the waste layer of the oil field. The hydraulic injection pump adopts a 35KW electric motor, ...

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Abstract

Relating to the technical field of harmless treatment of petroleum exploitation sludge, the invention provides a harmless reinjection treatment method for petroleum exploitation sludge. By means of a pump station composed of several hydraulic injection pumps in parallel connection, the sludge generated in petroleum exploitation is sent to an abandoned layer of an oil field. The method provided in the invention employs the hydraulic injection pumps with long stroke, low stroke frequency and high pressure to inject the sludge into the abandoned layer of the oil field, therefore, the treatment problem of oilfield exploitation sludge is solved, and simultaneously the sludge is returned to underground, thus realizing recycling of petroleum resources in the sludge, enhancing the petroleum recovery rate of the oil field, and changing the waste petroleum exploitation sludge into things of value.

Description

technical field [0001] The invention relates to the technical field of harmless treatment of oil exploitation sludge, in particular to a method for harmless treatment of oil exploitation sludge reinjection. Background technique [0002] The oil extracted from the oil field will produce a large amount of sludge after oil-water separation. The composition of the oil mining sludge is extremely complex, mainly composed of emulsified oil, water, suspended solids, etc., and its composition is related to geological conditions, production technology, sewage treatment process, The specific resistance of oil mining sludge is 40 times larger than that of ordinary sludge, and its compressibility coefficient is 20 times larger. It is a difficult-to-filter sludge. Small, floc-like, high water content, bulky, so it is not easy to achieve three-phase separation of oil-water-mud. Direct discharge of petroleum mining sludge will occupy a large amount of land, and the toxic substances contain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00
Inventor 杨成永孙玉全贾吉冉
Owner DEZHOU UNITED GASOLINEEUM MACHINERY
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