CN104860376A - Low permeability high water content oilfield potential difference type oil and water collection process - Google Patents
Low permeability high water content oilfield potential difference type oil and water collection process Download PDFInfo
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- CN104860376A CN104860376A CN201510243455.0A CN201510243455A CN104860376A CN 104860376 A CN104860376 A CN 104860376A CN 201510243455 A CN201510243455 A CN 201510243455A CN 104860376 A CN104860376 A CN 104860376A
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Abstract
The invention belongs to the technical field of oilfield produced water treatment and particularly relates to a low permeability high water content oilfield potential difference type oil and water collection process. The process includes the following steps of 1) oil collection which includes conducting preliminary sedimentation on produced oil from a single well by adopting a dirty oil tank, adopting a transporting device to pull the water-cut oil on the upper part obtained after preliminary sedimentation to the nearby combination station to be subjected to purification and then transported out; 2) water collection which includes discharging oily sewage on the lower part and obtained after preliminary sedimentation of a single well into a low level water tank and then enabling the oily sewage in the low level water tank to flow into a water collection station by connecting a water collection pipeline; 3) produced water treatment and reinjection: delivering the oily sewage collected in the water collection station into the reinjection station through the water supply pipeline and delivering the treated oily sewage back to the single well through a reinjection pipeline for reinjection. By means of the process, the produced oil is treated and transported away, the water is collected, treated and re-injected, the built facilities are fully utilized, and operation cost is saved.
Description
Technical field
The invention belongs to Treatment Techniques of Extracted Water from Crude Oil Production field, be specifically related to the oil-collecting of a kind of hyposmosis high water cut oil field level difference type and catchment technique.
Background technology
The oil field layout that the eastern area portion in northern Shensi and Gansu Province is special and present situation, at present, when without collection transmission pipe network or per-well production is lower do not reach minimum throughput rate time, existing flow process be liquid measures (You Heshui) all in well site are all adopted the mode of automobile roping deliver to together nearby draw petrol station process after be delivered to joint station again, like this, virtually add roping expense, particularly when Cut of Oilfield comparatively large (more than 80%), automobile roping medium is oily(waste)water substantially, adds subsequent disposal load.
Summary of the invention
The object of the invention is to overcome profit roping together in well site in prior art, the high and problem of subsequent disposal difficulty of operation cost.
For this reason, the invention provides the oil-collecting of a kind of hyposmosis high water cut oil field level difference type and to catchment technique, comprise the steps:
1) oil-collecting: carry out preliminary sedimentation to single well fuel-displaced employing sump oil case, adopts Handling device to draw to joint station purifying treatment nearby outer defeated by the top wet oil after preliminary sedimentation.
2) catchment: the bottom oily(waste)water of individual well after preliminary sedimentation is entered low flush tank, then the oily(waste)water in low flush tank is entered by pipeline connection gravity flow of catchmenting station of catchmenting.
3) produced water disposal and re-injection: the oily(waste)water unification collected in station of catchmenting is sent into re-injection station through water supply line, and oily(waste)water returns individual well re-injection by re-injection pipeline after treatment.
Above-mentioned station of catchmenting be arranged on 3-5 seat individual well catchment pipeline concentrate place.
Above-mentioned re-injection station is arranged on oily zone center position.
Above-mentioned steps 2) in water collecting process, the oily(waste)water in low flush tank can not flow automatically enter station of catchmenting the interim supercharging of adopted supercharging device after deliver to by the pipeline that catchments station of catchmenting again.
Above-mentioned supercharging device is skid-mounted supercharging device.
The material of the above-mentioned pipeline that catchments adopts mesolow glass reinforced plastic.
Above-mentioned re-injection pipeline adopts laying in one ditch with the pipeline that catchments.
Beneficial effect of the present invention:
(1) solve the problem without profit during collection transmission pipe network together roping, this technique avoids the problem of profit roping together, and the oil after process pulls away, and water collects defeated nearby, process and re-injection nearby, saves operation cost in a large number.
(2) solve built facility recycling problem, utilize built facility to greatest extent, ensure that in well site, existing facility is not removed, and comprises the sump oil case, low flush tank etc. in well site, save cost.
(3) solve the moisture higher problem of wet oil, by roping again after preliminary sedimentation in well site, make the wet oil moisture control entering joint station below 25%, significantly reduce subsequent disposal load.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is that hyposmosis high water cut oil field level difference type of the present invention oil-collecting is catchmented the process flow sheet of technique.
Reference numeral: 1, sump oil case; 2, catchment pipeline; 3, Handling device; 4, joint station; 5, to catchment station; 6, water supply line; 7, re-injection station; 8, supercharging device; 9, re-injection pipeline.
Embodiment
Embodiment 1:
In order to overcome profit roping together in well site in prior art, the high and problem of subsequent disposal difficulty of operation cost, present embodiments provides a kind of hyposmosis high water cut oil field level difference type oil-collecting as shown in Figure 1 and to catchment technique, comprise the steps:
1) oil-collecting: preliminary sedimentation is carried out to single well fuel-displaced employing sump oil case 1, outer defeated after the top wet oil after preliminary sedimentation is adopted Handling device 3 roping to joint station 4 purifying treatment nearby.
2) catchment: the bottom oily(waste)water of individual well after preliminary sedimentation is entered low flush tank, then the oily(waste)water in low flush tank is connected gravity flow by the pipeline 2 that catchments enter station 5 of catchmenting.
3) produced water disposal and re-injection: the oily(waste)water unification collected in station 5 of catchmenting is sent into re-injection station 7 through water supply line 6, and oily(waste)water returns individual well re-injection by re-injection pipeline 9 after treatment.
In the present embodiment, oil well produced oil carries out preliminary sedimentation through sump oil case 1, and the wet oil on the just top of Handling device 3 roping, makes the wet oil moisture control entering joint station 4 below 25%, significantly reduce subsequent disposal load; And the oily(waste)water of bottom collects defeated nearby, process and re-injection nearby, save operation cost in a large number.
In addition, when oil mass is very little, crude oil transmission does not reach minimum throughput rate, and dehydrating of crude oil utilizes sump oil case built in well site, carries out oily water separation, separately and exclusively do not build dewatering unit after being transformed.
Present invention process utilizes built facility to greatest extent, ensures that in well site, existing facility is not removed, and comprises the sump oil case 1, low flush tank etc. in well site, saves cost.
Embodiment 2:
On the basis of embodiment 1, water gathering system makes full use of topographical elevation difference, described station 5 of catchmenting is arranged on 3-5 seat individual well and catchments the place that pipeline 2 concentrates, with conventional oil-collecting technique unlike, according to the feature of oily district High water cut, water heavy wool is few, arranges catchment pipeline and station, instead of arranges gathering pipeline and station; Described re-injection station 7 is arranged on oily zone center position.
In above-mentioned steps 2) in water collecting process, the remote individually and well site that physical features is lower, oily(waste)water in low flush tank can not flow automatically and enter station 5 of catchmenting, deliver to by the pipeline 2 that catchments station of catchmenting again after can adopting the interim supercharging of supercharging device 8, and described supercharging device 8 is skid-mounted supercharging device (comprising water tank, topping-up pump and Controlling System).
In addition, in order to meet production engineering specifications, described in the catchment material of pipeline 2 adopt mesolow glass reinforced plastic.Described re-injection pipeline 9 adopts laying in one ditch with the pipeline 2 that catchments.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (7)
1. the oil-collecting of hyposmosis high water cut oil field level difference type is catchmented a technique, it is characterized in that: comprise the steps:
1) oil-collecting: preliminary sedimentation is carried out to single well fuel-displaced employing sump oil case (1), outer defeated after the top wet oil after preliminary sedimentation is adopted Handling device (3) roping to joint station (4) purifying treatment nearby;
2) catchment: the bottom oily(waste)water of individual well after preliminary sedimentation is entered low flush tank, then the oily(waste)water in low flush tank is entered station of catchmenting (5) by the pipeline that catchments (2) connection gravity flow;
3) produced water disposal and re-injection: the oily(waste)water unification collected in station (5) of catchmenting sends into re-injection station (7) through water supply line (6), and oily(waste)water returns individual well re-injection by re-injection pipeline (9) after treatment.
2. hyposmosis high water cut oil field level difference type oil-collecting as claimed in claim 1 is catchmented technique, it is characterized in that: described in station (5) of catchmenting be arranged on 3-5 seat individual well and catchment the place that pipeline concentrates.
3. hyposmosis high water cut oil field level difference type oil-collecting as claimed in claim 1 is catchmented technique, it is characterized in that: described re-injection station (7) is arranged on oily zone center position.
4. hyposmosis high water cut oil field level difference type oil-collecting as claimed in claim 1 is catchmented technique, it is characterized in that: described step 2) in water collecting process, the oily(waste)water in low flush tank can not flow automatically enter station of catchmenting (5) the interim supercharging of adopted supercharging device (8) after deliver to station of catchmenting (5) by the pipeline that catchments (2) again.
5. hyposmosis high water cut oil field level difference type oil-collecting as claimed in claim 3 is catchmented technique, it is characterized in that: described supercharging device (8) is skid-mounted supercharging device.
6. hyposmosis high water cut oil field level difference type oil-collecting as claimed in claim 1 is catchmented technique, it is characterized in that: described in the catchment material of pipeline (2) adopt mesolow glass reinforced plastic.
7. hyposmosis high water cut oil field level difference type oil-collecting as claimed in claim 1 is catchmented technique, it is characterized in that: described re-injection pipeline (9) adopts laying in one ditch with the pipeline (2) that catchments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510243455.0A CN104860376B (en) | 2015-05-14 | 2015-05-14 | A kind of hyposmosis high water cut oil field level difference type oil-collecting collection hydraulic art |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510243455.0A CN104860376B (en) | 2015-05-14 | 2015-05-14 | A kind of hyposmosis high water cut oil field level difference type oil-collecting collection hydraulic art |
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| Publication Number | Publication Date |
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| CN104860376A true CN104860376A (en) | 2015-08-26 |
| CN104860376B CN104860376B (en) | 2017-03-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020079248A1 (en) * | 2000-06-27 | 2002-06-27 | Steve Kresnyak | Method of removing water and contaminants from crude oil containing same |
| CN101967390A (en) * | 2009-07-28 | 2011-02-09 | 北京捷水科技有限责任公司 | Method and equipment for dehydrating crude oil |
| CN101993716A (en) * | 2009-08-11 | 2011-03-30 | 朱晓芳 | New process and equipment for dehydrating viscous oil |
| CA2707573A1 (en) * | 2010-06-30 | 2011-12-30 | Gang Yuan | Centralized sump oil and acid oil treatment process and system |
-
2015
- 2015-05-14 CN CN201510243455.0A patent/CN104860376B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020079248A1 (en) * | 2000-06-27 | 2002-06-27 | Steve Kresnyak | Method of removing water and contaminants from crude oil containing same |
| CN101967390A (en) * | 2009-07-28 | 2011-02-09 | 北京捷水科技有限责任公司 | Method and equipment for dehydrating crude oil |
| CN101993716A (en) * | 2009-08-11 | 2011-03-30 | 朱晓芳 | New process and equipment for dehydrating viscous oil |
| CA2707573A1 (en) * | 2010-06-30 | 2011-12-30 | Gang Yuan | Centralized sump oil and acid oil treatment process and system |
Non-Patent Citations (2)
| Title |
|---|
| 张瑞华: "边远小断块油田集输工艺优化", 《中国石油和化工标准与质量》 * |
| 杨云霞等: "我国主要油田污水处理技术现状及问题", 《油气田地面工程》 * |
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