CN1730900A - Wellhead drip medicament charging method by using water pressure to retain constant medicament charging differential pressure - Google Patents
Wellhead drip medicament charging method by using water pressure to retain constant medicament charging differential pressure Download PDFInfo
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- CN1730900A CN1730900A CN 200510096744 CN200510096744A CN1730900A CN 1730900 A CN1730900 A CN 1730900A CN 200510096744 CN200510096744 CN 200510096744 CN 200510096744 A CN200510096744 A CN 200510096744A CN 1730900 A CN1730900 A CN 1730900A
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Abstract
The well head chemical dropping method of utilizing water pressure to maintain constant chemical adding pressure aims at providing sufficient chemical adding amount to maintain constant chemical concentration and features that water is shunt with controlling tap from the water adding pipeline to the chemical adding tank to form constant pressure difference on the chemical storing capsule so as to control the chemical adding amount accurately, and the capsule is provided with filter and capillary for chemical to be dropped into water adding mixing pipe and added to oil jacket annular space connecting valve continuously and stably under relatively small pressure difference. The chemical adding tank has temperature maintained with water adding temperature maintaining pipe and water flows out through capillary in temperature maintaining water bath. The method has stable chemical concentration within the effective wax-preventing and antifreezing range.
Description
Technical field:
The present invention relates to petroleum industry oil well dosing technology, especially a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance.
Background technology:
In the oil recovery process of oil field, for realizing the clear wax control and the antiscale of down-hole oil tube and downhole pump, to add chemical agent to the down-hole from the ring-like space of the oil jacket of oil well, at present the conventional well stomion drips medicine and is to use water nozzle or valve to come to add under the control well dose, it is 1～3Kg that average design every day adds dose, but, because it is inaccurate and to add dose little to add dose control, after making medicament through liquid in the sleeve pipe, drug concentration fluctuates in the extraction liquid, can not be stabilized in more than the minimal effective concentration, can't effectively realize the purpose of clear wax control and antiscale; In addition, the electronic chemicals dosing plant of well head causes damaging or losing owing to ground installation precision, complexity easily, and same existence is little owing to adding dose, and extraction liquid herb liquid agent concentration fluctuates, and can not be stabilized in the above problem of minimal effective concentration.
Summary of the invention:
Dose is little to make the drug concentration fluctuation big because of adding in the existing well head adding method thereof in order to overcome, can not be stabilized in the above deficiency of minimal effective concentration, the invention provides a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance, not only accurately control well is stable because of adding the little drug concentration that makes of dose down for this drop adding method thereof, and make the concentration of chemical agent in arriving downhole pump inlet and oil pipe can be continuously, be stabilized in effective wax control concentration range, have the advantage of preventing freeze in winter simultaneously.
Adoptable technical scheme is: this well head drop adding method thereof, utilize at inlet control water inlet water nozzle and distribute 2～3m from the water mixing pipeline
3The water yield of/d enters the dosing tank body, and water mixing pressure reduced to a jar internal pressure, re-use an outlet water nozzle and in jar and between the casing pressure, set up pressure reduction, in jar, form constant drop dosing control pressure reduction on the drug storage capsule, accurately control adding dose, strainer is housed in the capsule, utilize capillary tube that medicament is added the oil jacket annular space after the drop than continous-stable under the small pressure difference advances the water mixing mixing tube and connect valve, capillary tube is flow through in the water mixing of flowing out in the dosing tank body, and capillary tube is carried out water bath heat preservation.
Above-mentioned adopt to keep pure pharmaceutical quantities constant when adding dose and accurately control, utilize clear water that the two-stage water nozzle distributes well head with join the down-hole after pure medicament mixes; The water-in and water-out water nozzle can use the ceramic water nozzle of 1～2 different-diameter; Capsule can adopt yielding elastomeric material to make; Capillary tube can use the copper pipe of internal diameter 0.3mm, external diameter 1.5mm; Strainer can use 100 mesh filter screens, bore dia 0.147mm, area of passage 0.008m
2
The invention has the beneficial effects as follows: this invention is adopted and is kept pure pharmaceutical quantities constant, increase the method for medicament dilution liquid measure, utilize capillary tube under water mixing pressure reduction, the medicament continous-stable is mixed into liquid medicine at well head and water mixing, utilize different water nozzles that dosing pressure reduction and quantity of pharmacological solution are accurately controlled, realize the stable of dosing pressure reduction and quantity of pharmacological solution, finally reach the purpose of down-hole drug concentration continous-stable in effective wax control concentration range; Because this technical pattern is simple, need not the chemicals dosing plant of ground extra power, therefore fragile or lose, this method does not have clearly advantages such as wax control result is good, convenient management; Because adopt insulating tube that the dosing tank body is incubated, the water mixing of flowing out in the tank body is carried out water bath heat preservation to capillary tube again, plays the effect of preventing freeze in winter.
Description of drawings:
Fig. 1 is a well head drop chemicals dosing plant structural representation.
1-back with water inlet line among the figure, the 2-water nozzle of intaking, the 3-insulating tube, 4-dosing tank body, the 5-capsule, 6-anther sac vent valve, 7-doses the medicament joint, the 8-water outlet water nozzle, the 9-capillary tube, 10-oil jacket annular space connects valve, 11-mixing tube, 12-observation ward, 13-strainer.
The specific embodiment:
The present invention is further illustrated below in conjunction with drawings and Examples:
In conjunction with shown in Figure 1, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance, this drop adding method thereof is to utilize at inlet control water inlet water nozzle 2 to distribute 2～3m from water mixing pipeline 1
3The water yield of/d enters dosing tank body 4, and water mixing pressure reduced to a jar internal pressure, re-use an outlet water nozzle 8 and in jar and between the casing pressure, set up pressure reduction, in jar, form constant drop dosing control pressure reduction on the drug storage capsule 5, accurately control adding dose, strainer 13 is housed in the capsule 5, utilize capillary tube 9 that medicament is entered water mixing mixing tube 11 backs at the drop than continous-stable under the small pressure difference and add oil jacket annular space connection valve 10, dosing tank body 4 adopts 3 insulations of water mixing insulating tube, capillary tube 9 is flow through in the water mixing of flowing out in the dosing tank body 4, capillary tube 9 is carried out water bath heat preservation, wherein, when adding dose and accurately control, adopt to keep pure pharmaceutical quantities constant, utilize clear water that the two-stage water nozzle distributes well head with join the down-hole after pure medicament mixes; The water-in and water-out water nozzle can use the ceramic water nozzle of 1～2 different-diameter; Capsule can adopt yielding elastomeric material to make; Capillary tube can use the copper pipe of internal diameter 0.3mm, external diameter 1.5mm; Strainer can use 100 mesh filter screens, bore dia 0.147mm, area of passage 0.008m
2
In actual use, utilize water mixing to press and keep constant dosing pressure reduction well head drop adding method thereof, by dripping medicine device in the well head mounting points, back with water inlet line 1 mainly is that chemicals dosing plant is introduced in the water mixing of oil well ground, control the water yield and the pressure of the chemicals dosing plant of flowing through by changing water inlet water nozzle 2, water inlet water nozzle 2 can distribute 2～3m from water mixing back with water inlet line 1
3The water yield of/d enters dosing tank body 4, but dosing tank body 4 can adopt external diameter 377mm, wall thickness 10mm, high 394mm pressure-bearing 5Mpa, and dosing tank body 4 adopts water mixing insulating tube 3 tracing thermal-insulatings, and it is 25mm that insulating tube 3 can be selected internal diameter; Drug storage capsule 5 can adopt yielding elastomeric material to make, and capsule 5 is built-in with strainer 13, and strainer 13 can be selected 100 order steel meshes, aperture 0.147mm, area of passage 0.008m for use
2, can prevent effectively that capillary tube 9 from stopping up; Anther sac vent valve 6 is opened during greater than 5Mpa in the internal pressure of anther sac 5, and for fear of because the excessive harm that causes of anther sac 5 internal pressures, anther sac vent valve 6 bottoms are equipped with doses medicament joint 7; Water outlet water nozzle 8 can use the ceramic water nozzle of 1～2 different-diameter to come in the adjustable pipe and the pressure reduction between the sleeve pipe, and it acts on and forms constant drop dosing control pressure reduction on jar interior drug storage capsule 5; Utilize capillary tube 9 with the medicament of 1～2kg/d (actual use in general consumption) than under the small pressure difference, the drop of continous-stable connects valve 10 through the oil jacket annular space after advancing water mixing mixing tube 11, enter into the ring-like space of oil well oil jacket, realized by pure pharmaceutical quantities constantly, increase the amount 1～3m of clear water
3/ d increases the purpose of quantity of pharmacological solution, and wherein capillary tube 9 can use internal diameter 0.3mm, external diameter 1.5mm copper pipe, controls by the length of regulating copper pipe to add dose, and mixing tube 11 internal diameters can be 38mm, and pure medicament and water mixing are mixed into liquid medicine in a little pipes; Observation port 12 can adopt organic glass and the minimum pressure-bearing 5Mpa of wall thickness 15mm.
Embodiment: use this well head adding method thereof, carry out 6 mouthfuls of well field trials altogether, experimental data sees Table 1.
| Pound sign | Capillary pipe length (m) | The outspoken footpath of inlet water (mm) | Outlet water nozzle diameter (mm) | Water mixing pressure (Mpa) | Jar internal pressure (Mpa) | Casing pressure (Mpa) | Oil pressure (Mpa) | Quantity of pharmacological solution (m 3/d) | Design adds dose (kg/d) | Pharmaceutical quantities (kg/d) |
| Middle 333-oblique 32 | 2.4 | 1.6 | 1.2 | 1.7 | 0.63 | 0.32 | 0.36 | 3.6 | 0.6 | 0.8 |
| Middle 340-oblique 32 | 1.8 | 1.6 | 1.2 | 1.7 | 0.64 | 0.33 | 0.3 | 3.8 | 2.4 | 2.8 |
| Middle 341-oblique 32 | 1.6 | 1.6 | 1.2 | 1.7 | 0.62 | 0.32 | 0.37 | 4.2 | 3 | 3.3 |
| Middle 340-oblique 31 | 2.4 | 1.6 | 1.2 | 1.8 | 0.58 | 0.26 | 0.28 | 3.5 | 0.8 | 1.1 |
| Middle 341-oblique 31 | 2.4 | 1.6 | 1.2 | 1.8 | 0.55 | 0.28 | 0.31 | 3.4 | 0.6 | 0.9 |
| South 1-22-12 | 2.5 | 1.6 | 1.4 | 1.9 | 0.65 | 0.36 | 0.35 | 4.2 | 0.2 | 0.6 |
Field experiment proves, utilize constant pressure difference to carry out the well head drop adding method thereof of dose control and maintenance shaft bottom drug concentration continous-stable, the actual dose that adds all adds dose greater than design, can keep shaft bottom drug concentration continous-stable in effective wax control concentration range, reached and utilized water mixing to press the constant dosing pressure reduction of maintenance to carry out well head interpolation chemical agent, realized the purpose of control and remove of well paraffin and antiscale.
Claims (6)
1, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance, it is characterized in that: utilize inlet water inlet water nozzle (2) to enter dosing tank body (4) from the water yield that water mixing pipeline (1) distributes 2～3m3/d, and water mixing pressure reduced to a jar internal pressure, re-use an outlet water nozzle (8) and in jar and between the casing pressure, set up pressure reduction, drug storage capsule (5) is gone up and is formed constant drop dosing control pressure reduction in jar, accurately control adding dose, strainer (13) is housed in the capsule (5), utilize capillary tube (9) that medicament is entered water mixing mixing tube (11) back at the drop than continous-stable under the small pressure difference and add oil jacket annular space connection valve (10), dosing tank body (4) adopts water mixing insulating tube (3) insulation, capillary tube (9) is flow through in the water mixing of flowing out in the dosing tank body (4), and capillary tube (9) is carried out water bath heat preservation.
2, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance according to claim 1, it is characterized in that: when adding dose and accurately control, adopt to keep pure pharmaceutical quantities constant, utilize clear water that the two-stage water nozzle distributes well head with join the down-hole after pure medicament mixes.
3, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance according to claim 1, it is characterized in that: water-in and water-out water nozzle (2,8) can use the ceramic water nozzle of 1～2 different-diameter.
4, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance according to claim 1, it is characterized in that: capsule (5) can adopt yielding elastomeric material to make.
5, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance according to claim 1, it is characterized in that: capillary tube (9) can use the copper pipe of internal diameter 0.3mm, external diameter 1.5mm.
6, a kind of method of utilizing water mixing to press the dosing of the constant dosing pressure reduction well head drop of maintenance according to claim 1, it is characterized in that: strainer (13) can use 100 mesh filter screens, bore dia 0.147mm, area of passage 0.008m
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100967449A CN100347401C (en) | 2005-08-24 | 2005-08-24 | Wellhead drip medicament charging method by using water pressure to retain constant medicament charging differential pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100967449A CN100347401C (en) | 2005-08-24 | 2005-08-24 | Wellhead drip medicament charging method by using water pressure to retain constant medicament charging differential pressure |
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| CN1730900A true CN1730900A (en) | 2006-02-08 |
| CN100347401C CN100347401C (en) | 2007-11-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110257034A (en) * | 2019-07-12 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of water mixing pipeline snaking de-plugging agent and its plug-removing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364207Y (en) * | 1999-01-05 | 2000-02-16 | 程坤 | Chemical wax control drop feeding device |
| CN2390007Y (en) * | 1999-09-08 | 2000-08-02 | 辽河石油勘探局钻采工艺研究院 | Chemical feeder for natural gas wellhead |
| CN2432335Y (en) * | 2000-06-20 | 2001-05-30 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Continuous automatic chemical-feeding device for oil well |
| CN2604521Y (en) * | 2002-12-17 | 2004-02-25 | 大庆石油管理局 | Automatic controlling drip chemials filling device for oil well use |
| CN1458387A (en) * | 2003-06-18 | 2003-11-26 | 大庆油田有限责任公司 | Method for adding chemicals using ground water mixing pipeline |
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- 2005-08-24 CN CNB2005100967449A patent/CN100347401C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110257034A (en) * | 2019-07-12 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of water mixing pipeline snaking de-plugging agent and its plug-removing device |
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| CN100347401C (en) | 2007-11-07 |
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Effective date of registration: 20230117 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District Longnan Patentee after: Daqing Oilfield Co.,Ltd. Patentee after: PETROCHINA Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District Longnan Patentee before: Daqing Oilfield Co.,Ltd. |