CN1515780A - Method for deblocking blocked pipe for extracting mirabilite ore deposit by using water soluble method and its equipment - Google Patents
Method for deblocking blocked pipe for extracting mirabilite ore deposit by using water soluble method and its equipment Download PDFInfo
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- CN1515780A CN1515780A CNA031247733A CN03124773A CN1515780A CN 1515780 A CN1515780 A CN 1515780A CN A031247733 A CNA031247733 A CN A031247733A CN 03124773 A CN03124773 A CN 03124773A CN 1515780 A CN1515780 A CN 1515780A
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- water
- pipe
- well
- plugging
- well casing
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Abstract
The present invention discloses a plugged pipe plugging-removing method for extracting miribilite mine. It includes the following steps: makking water with 25-50 deg.C be passed through water injection pipe positioned in the central position of well pipe and directly reached to the upper portion of well-plugging material, and be injected into well pipe, dissolving and scouring sodium sulfate decahydrate crystal body, discharging the dissolved bittern from gap between water injection pipe and well pipe and from wellhead, and progressively downward placing the water injection pipe with the dissolution and discharge of the crystal body until the crystal body is completely dissolved and discharged out. The plugging-removing equipment includes pressure-bearing soft pipe, water-feeding short connector and water-injection hard pipe.
Description
Technical field
The present invention relates to a kind of solution mining saltcake ore deposit plugging method for removing blockage and equipment.
Background technology
Drilling solution mining saltcake ore deposit is by injecting water as solvent, with the saltcake mineral dissolution, generates aqueous sodium persulfate solution and extraction ground.The concentration of aqueous sodium persulfate solution is relevant with its temperature.At a certain temperature, when temperature descended, the sodium sulphate in the aqueous sodium persulfate solution very easily crystallization watchman's clapper went out, and generated the sal glauberi crystal.If do not improve temperature, this sal glauberi crystal will stop up well casing gradually and cause stopping production in very short time.In addition, to contain silt particle more when ore bed, or contain the more top board of silt particle and collapse, and the drilling well sediment outflow is untimely, also can cause the silt particle plugging.
When plugging took place, general method for removing blockage was to utilize rig to drill obstruction in the well casing of center at present, or comes de-plugging with the tractor hoist drifting.There is following defective in these two kinds of methods: (1) must arrive the scene by heavy rig, drilling rod or the tractor hoist of carrying, and installs; (2) job site necessary dynamic (electricity or diesel-driven generator) and water supply; (3) time-consuming, take a lot of work, the cost height.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective that existing method for removing blockage exists, provide a kind of easy and simple to handle, cost is low, efficient is high, need not the solution mining saltcake ore deposit plugging method for removing blockage and the equipment thereof of power.
Technical scheme of the present invention is: utilize the physicochemical properties of stifled well thing (sal glauberi crystal) itself, with temperature 25-50 ℃ water (even more preferably 35-45 ℃ hot water, the more preferably hot water about 40 ℃.The temperature of water is low excessively, and sal glauberi dissolution of crystals speed is too slow, can reduce de-plugging efficient; The temperature of water improves, and can accelerate the dissolution velocity of sal glauberi crystal, but too high, the dissolution velocity of sal glauberi crystal reduces on the contrary, and because energy consumption increases, it is worthwhile also to may not be certain.Can utilize the cooling water of processing factory to do de-plugging hot water.), inject in the well casing by the water filling hard tube that places well casing centre and through stifled well thing top, dissolve and wash away crystalline solid, and return out well head from the gap of water filling hard tube and well casing (being equivalent to a small-sized individual well convection current).The water filling hard tube is along with crystalline solid dissolving and discharge and transfer gradually, till thoroughly dissolving, discharging the crystalline solid in the well casing.The water that injects should have suitable pressure, and the pressure size can be advisable from the discharge well head of the gap between water filling hard tube and the center well casing to guarantee the bittern (injection water) after the dissolving; Well is dark more, and the pressure of water should be big more.The water filling hard tube preferably selects for use seamless steel pipe to make, and connects with box cupling.
The present invention has following advantage: (1) does not need heavy equipment, is not having under the situation of power, still can carry out de-plugging work; (2) easy and simple to handle, cost low (hard tube used of de-plugging can be multiplexing, so prime cost is de-plugging personnel's a wage), used equipment and instrument are simple; (3) the de-plugging time lacks, and does not damage the production pipe string (comparing with the rig de-plugging) of down-hole.
Description of drawings
Accompanying drawing is present device and operating principle schematic diagram.
1 pressure-bearing flexible pipe; 2 water inlet short circuits; 3 water filling hard tubes; 4 the dissolving after bittern or contain sand water; 5 obstructions; 6 molten chamber and bittern
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are illustrated.
The water injection equipment that present embodiment adopts is made of pressure-bearing flexible pipe 1, water inlet short circuit 2 and the water filling hard tube 3 made of seamless steel pipe, and pressure-bearing flexible pipe 1 is connected on the bypass of water short circuit 2 in succession, and water inlet short circuit 2 is positioned at the upper end of water filling hard tube 3, and connects with screw.
The concrete operations step of de-plugging is as follows:
(1) when finding that well casing stops up, (finds more early well more, easy more solution), lay down wellhead assembly;
(2) install derrick (derrick of available rig, also available easy tripod or portal frame); Water filling hard tube 3 is hung on derrick;
(3) water filling hard tube 3 is inserted in the well casing that needs de-plugging and through stifled well thing 5 tops;
(4) connect water filling hard tube 3 and water inlet short circuit 2;
(5) open gate valve, about 40 ℃ hot water are injected well by pressure-bearing flexible pipe 1, water inlet short circuit 2 and water filling hard tube 3, dissolve and wash away crystallization obstruction 5, the bittern 4 after the dissolving is discharged well head from the gap between water injection pipe 3 and the well casing.The bittern 4 of discharging temporarily leaves in the crystallizing pond, or uses pumped back processing factory.
(5) after the center well casing is removed obstruction, continue fill cycle, to remove the obstruction between center well casing and the sleeve pipe.
Claims (4)
1, a kind of solution mining saltcake ore deposit plugging method for removing blockage, it is characterized in that, temperature 25-50 ℃ and water with suitable pressure are injected in the well casing by the water injection pipe that places well casing centre and through stifled well thing top, dissolve and wash away the sal glauberi crystalline solid, bittern after the dissolving relies on the pressure that injects water to discharge well head from the gap between water injection pipe and the well casing, water injection pipe is along with crystalline solid dissolving and discharge and transfer gradually, till thoroughly dissolving, discharging the crystalline solid in the well casing.
2, exploitation saltcake ore deposit plugging method for removing blockage according to claim 1 is characterized in that, the temperature of the water in the described injection well casing is 35-45 ℃.
3, exploitation saltcake ore deposit plugging method for removing blockage according to claim 2 is characterized in that, the temperature of the water in the described injection well casing is 40 ℃.
4, a kind of solution mining saltcake ore deposit plugging de-plugging equipment is characterized in that, this equipment is made of pressure-bearing flexible pipe, water inlet short circuit and water filling hard tube, and the pressure-bearing flexible pipe is connected on the bypass of water short circuit into, and the water inlet short circuit is positioned at the upper end of water filling hard tube, and connects with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031247733A CN1295420C (en) | 2003-08-28 | 2003-08-28 | Method for deblocking blocked pipe for extracting mirabilite ore deposit by using water soluble method and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031247733A CN1295420C (en) | 2003-08-28 | 2003-08-28 | Method for deblocking blocked pipe for extracting mirabilite ore deposit by using water soluble method and its equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1515780A true CN1515780A (en) | 2004-07-28 |
| CN1295420C CN1295420C (en) | 2007-01-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031247733A Expired - Fee Related CN1295420C (en) | 2003-08-28 | 2003-08-28 | Method for deblocking blocked pipe for extracting mirabilite ore deposit by using water soluble method and its equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1295420C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260801B (en) * | 2008-04-24 | 2011-06-15 | 化工部长沙设计研究院 | Well drilling hot melt separate zone production technology for oil-containing low infiltration native sulphur deposit |
| CN101298835B (en) * | 2007-04-30 | 2012-03-21 | 北京海能海特石油科技发展有限公司 | Controllable acid distributing tube and controllable acid distributing method |
| CN102434141A (en) * | 2011-09-16 | 2012-05-02 | 化工部长沙设计研究院 | Method for mining sylvite in underground carnallite ore |
| CN101598009B (en) * | 2009-07-01 | 2012-08-08 | 邛崃市鸿丰钾矿肥有限责任公司 | Crystallization prevention control device for high temperature brine |
| CN114482896A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Optimization method of plugging removal method for oil-water well |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290650A (en) * | 1979-08-03 | 1981-09-22 | Ppg Industries Canada Ltd. | Subterranean cavity chimney development for connecting solution mined cavities |
| US4368922A (en) * | 1980-12-02 | 1983-01-18 | W. R. Grace & Co. | Method for solution mining of complex carbonaceous materials |
| US5351759A (en) * | 1992-10-22 | 1994-10-04 | Shell Oil Company | Slag-cement displacement by direct fluid contact |
| CN1069732C (en) * | 1999-05-15 | 2001-08-15 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
-
2003
- 2003-08-28 CN CNB031247733A patent/CN1295420C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298835B (en) * | 2007-04-30 | 2012-03-21 | 北京海能海特石油科技发展有限公司 | Controllable acid distributing tube and controllable acid distributing method |
| CN101260801B (en) * | 2008-04-24 | 2011-06-15 | 化工部长沙设计研究院 | Well drilling hot melt separate zone production technology for oil-containing low infiltration native sulphur deposit |
| CN101598009B (en) * | 2009-07-01 | 2012-08-08 | 邛崃市鸿丰钾矿肥有限责任公司 | Crystallization prevention control device for high temperature brine |
| CN102434141A (en) * | 2011-09-16 | 2012-05-02 | 化工部长沙设计研究院 | Method for mining sylvite in underground carnallite ore |
| CN102434141B (en) * | 2011-09-16 | 2014-02-26 | 中水电海外投资有限责任公司 | Method for mining sylvite in underground carnallite ore |
| CN114482896A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Optimization method of plugging removal method for oil-water well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1295420C (en) | 2007-01-17 |
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Granted publication date: 20070117 Termination date: 20100828 |