CN103485755A - Drilling process of anhydrous sodium sulfate mine well - Google Patents
Drilling process of anhydrous sodium sulfate mine well Download PDFInfo
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- CN103485755A CN103485755A CN201210248739.5A CN201210248739A CN103485755A CN 103485755 A CN103485755 A CN 103485755A CN 201210248739 A CN201210248739 A CN 201210248739A CN 103485755 A CN103485755 A CN 103485755A
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- well
- sodium sulfate
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- anhydrous sodium
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Abstract
The invention relates to a drilling process of an anhydrous sodium sulfate mine well. The process comprises the following steps of 1, drilling a target well, i.e. setting a target well casing in the target well, wherein the lower end of the target well casing is positioned in an anhydrous sodium sulfate mine layer, and the depth of the target well exceeds a bottom plate of the anhydrous sodium sulfate mine layer to be mined; accurately detecting the thickness of the mine layer of the target well and the depth of the bottom plate of the mine layer; plugging excessive parts under the bottom plate of the mine layer, and enabling the lower end of the target well casing to be 2 to 5 meters away from the bottom plate of the anhydrous sodium sulfate mine layer; 2, drilling a communicating well, i.e. in the drilling process of a horizontal section, using a magnetic induction device to guide the direction, and enabling the horizontal section to directly hit the lower end of the target well casing. The magnetic induction device comprises a rotary magnetic field generator and a magnetic sensor, wherein the magnetic sensor comprises three mutually orthogonal magnetic flux gates. The drilling process has the advantages that the process of building a corrosion cavity is omitted, the cost is saved, and the well drilling period is shortened; by utilizing the magnetic induction device to guide the direction, the problem of difficult targeting of the communicating well is solved, the phenomenon of overfast local corrosion in the mining process is avoided, and the service life of the mine well is prolonged.
Description
Technical field
The invention provides a kind of anhydrous sodium sulfate (Na
2sO
4) drilling technology of mine, belong to solubility salt mine and creep into field.
Background technology
Exploit at present especially anhydrous sodium sulfate (Na of soluble-salt
2sO
4) mine by following technique, form, make a call to a target well, shaft bottom is positioned among the anhydrous sodium sulfate ore bed.Improve for ease of connected well the rate that hits, must utilize individual well exploitation method exploitation anhydrous sodium sulfate bittern, until form enough large corrosion chamber.Make a call to a connected well: this connected well lower end comprises a horizontal segment, and this horizontal segment roughly is communicated with above-mentioned corrosion chamber along the seam floor direction.Later recovery process is: inject clear water with high-pressure pump to any well, from another well extraction anhydrous sodium sulfate bittern.
The deficiencies in the prior art part is: for setting up the corrosion chamber, need to the sleeve pipe in the target well in lower center tube again, cause unnecessary waste; Need to postpone the progress of creeping into of mine through individual well exploitation after a while because build the corrosion chamber, reduce production efficiency; The anhydrous sodium sulfate bittern concentration of now extraction is low, causes the product processing cost to increase; Due to the existing corrosion chamber of target well, locate morning in the corrosion chamber in recovery process molten to bed top simultaneously, thereby caused roof fall in advance.
Summary of the invention
The object of the present invention is to provide a kind of anhydrous sodium sulfate (Na
2sO
4) drilling technology of mine, be applicable to the exploitation of solubility salt mine, can improve mine quality and production efficiency.
The drilling technology of a kind of anhydrous sodium sulfate mine of the present invention comprises the following steps:
1, beat the target well: divide into the target casing in the target well, this target casing lower end is positioned among the anhydrous sodium sulfate ore bed, the drilling process of target well will surpass and be adopted the anhydrous sodium sulfate seam floor by: the degree of depth of this target well, thereby can accurately elicite the degree of depth of target well place's seam thickness and seam floor, then the following redundance of shutoff seam floor, make target casing lower end apart from 2 ~ 5 meters of anhydrous sodium sulfate seam floors.
2, beat UNICOM's well: UNICOM's well comprises vertical section, inclination section and horizontal segment, wherein, in the drilling process of horizontal segment, utilizes magnetic-inductive device to be led, and makes the horizontal segment casing lower end of directing hit on the target.
Described magnetic-inductive device comprises the Magnetic Sensor that is arranged on the rotating magnetic field generator in drill bit and is arranged on the target shaft bottom, and this Magnetic Sensor comprises three mutually orthogonal fluxgates.
The invention has the advantages that: 1, can save the process of building the corrosion chamber, be conducive to cost-savingly, shorten the well-digging cycle.2, utilize magnetic-inductive device to be led, thoroughly solved the connected well difficult problem that hits.3, can avoid in recovery process occurring local molten too fast phenomenon, thereby extend mine life, improve production efficiency.Technique of the present invention also goes for the exploitation of other solubility salt mine.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further.
The structural representation that accompanying drawing 1 is the anhydrous sodium sulfate mine.
Accompanying drawing 2 is magnetic-inductive device guiding principle figure.
The specific embodiment
Embodiment 1: the present embodiment provides a kind of drilling technology of anhydrous sodium sulfate mine, comprises the following steps.
1, beat target well 1: in the present embodiment, the target well is Vertical Well, also can select inclined shaft as the target well according to actual conditions.The drilling process of the described target well of the present embodiment is: the well depth of this target well surpasses seam floor, thereby accurately elicite the degree of depth of target well place's seam thickness and seam floor, then shutoff targeted downhole end redundance, make the target shaft bottom apart from anhydrous sodium sulfate seam floor 2---5 rice.
Target well in the present embodiment: the finishing drilling degree of depth is 2030 meters, carry out on request conventional electric logging after finishing drilling, according to well logging result and the comparative analysis of real brill data, the anhydrous sodium sulfate seam thickness that this well will be exploited is 10 meters, this seam floor buried depth is 2000 meters, therefore determines 1997 meters of casing setting depths.
Complete rear well cementation under the target casing, well cementation finishes, and waits the solidifying cementing quality that carries out after 48 hours and detects well logging, lower bit drills cement plug to 2000 meter completion.
Place Magnetic Sensor in the sleeve pipe lower end, this Magnetic Sensor mainly comprises three mutually orthogonal fluxgate Gx, Gy, Gz, for realizing accurate guiding, one of above-mentioned three fluxgates should be installed along the direction of horizontal segment, mean the direction of the horizontal segment of UNICOM's well in the present embodiment with X-axis, and the direction of fluxgate Gx is installed along X-direction, referring to accompanying drawing 1.
2, beat UNICOM's well 2: UNICOM's well 2 comprises vertical section 21, inclination section 22 and horizontal segment 23, after utilizing routine techniques to complete creeping into of vertical section, inclination section, employing is built-in with the bit drills of rotating magnetic field generator and advances horizontal segment, in drilling process, the Magnetic Sensor that the targeted downhole end is located in utilization is led, its specific works process is: when drill bit A is positioned on the axis of X-axis, while being positioned on the planned course of horizontal segment, can read the magnetic induction signal on fluxgate Gx in Magnetic Sensor, be zero and read the magnetic induction signal on fluxgate Gy, Gz.When drill bit A departs from X-axis, each fluxgate Gx, Gy, Gz are upper can read the magnetic induction signal that intensity does not wait, according to simple solid geometry formula, can calculate the angle and direction that drill bit departs from X-axis, driller's work can be controlled drilling direction according to result of calculation, make drill bit A remain on X-axis, and final hit casing lower end.
Claims (2)
1. an anhydrous sodium sulfate mine (Na
2sO
4) drilling technology, it is characterized in that comprising the following steps:
(1), beat the target well: divide into the target casing in the target well, this target casing lower end is positioned among the anhydrous sodium sulfate ore bed, the drilling process of target well will surpass and be adopted the anhydrous sodium sulfate seam floor by: the degree of depth of this target well, thereby can accurately elicite the degree of depth of target well place's seam thickness and seam floor, then the following redundance of shutoff seam floor, make target casing lower end apart from 2 ~ 5 meters of anhydrous sodium sulfate seam floors;
(2), beat UNICOM's well: UNICOM's well comprises vertical section, inclination section and horizontal segment, wherein, in the drilling process of horizontal segment, utilizes magnetic-inductive device to be led, and makes the horizontal segment casing lower end of directing hit on the target.
2. a kind of drilling technology of anhydrous sodium sulfate mine as claimed in claim 1, it is characterized in that described magnetic-inductive device comprises the Magnetic Sensor that is arranged on the rotating magnetic field generator in drill bit and is arranged on the target shaft bottom, this Magnetic Sensor comprises three mutually orthogonal fluxgates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248739.5A CN103485755A (en) | 2012-06-13 | 2012-07-18 | Drilling process of anhydrous sodium sulfate mine well |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193828.4 | 2012-06-13 | ||
| CN201210193828 | 2012-06-13 | ||
| CN201210248739.5A CN103485755A (en) | 2012-06-13 | 2012-07-18 | Drilling process of anhydrous sodium sulfate mine well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103485755A true CN103485755A (en) | 2014-01-01 |
Family
ID=49826302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210248739.5A Pending CN103485755A (en) | 2012-06-13 | 2012-07-18 | Drilling process of anhydrous sodium sulfate mine well |
Country Status (1)
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|---|---|
| CN (1) | CN103485755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469471A (en) * | 2018-07-05 | 2019-03-15 | 中蓝长化工程科技有限公司 | A method of increasing salt lake mining area halogen mining well and goes out halogen amount |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4221433A (en) * | 1978-07-20 | 1980-09-09 | Occidental Minerals Corporation | Retrogressively in-situ ore body chemical mining system and method |
| US5690390A (en) * | 1996-04-19 | 1997-11-25 | Fmc Corporation | Process for solution mining underground evaporite ore formations such as trona |
| CN1241676A (en) * | 1999-05-15 | 2000-01-19 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| CN1782320A (en) * | 2004-11-30 | 2006-06-07 | 通用电气公司 | Method and system for precise drilling guidance of twin wells |
| CN101012742A (en) * | 2007-02-07 | 2007-08-08 | 鄂尔多斯市奥利星煤化有限责任公司 | Water soluble exploitation method of mirabilite mine by butt-joint connection |
| CN101799558A (en) * | 2010-03-19 | 2010-08-11 | 中国石油大学(北京) | Electromagnetic surveying system while drilling of adjacent-well parallel intervals |
-
2012
- 2012-07-18 CN CN201210248739.5A patent/CN103485755A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4221433A (en) * | 1978-07-20 | 1980-09-09 | Occidental Minerals Corporation | Retrogressively in-situ ore body chemical mining system and method |
| US5690390A (en) * | 1996-04-19 | 1997-11-25 | Fmc Corporation | Process for solution mining underground evaporite ore formations such as trona |
| CN1241676A (en) * | 1999-05-15 | 2000-01-19 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| CN1782320A (en) * | 2004-11-30 | 2006-06-07 | 通用电气公司 | Method and system for precise drilling guidance of twin wells |
| CN101012742A (en) * | 2007-02-07 | 2007-08-08 | 鄂尔多斯市奥利星煤化有限责任公司 | Water soluble exploitation method of mirabilite mine by butt-joint connection |
| CN101799558A (en) * | 2010-03-19 | 2010-08-11 | 中国石油大学(北京) | Electromagnetic surveying system while drilling of adjacent-well parallel intervals |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469471A (en) * | 2018-07-05 | 2019-03-15 | 中蓝长化工程科技有限公司 | A method of increasing salt lake mining area halogen mining well and goes out halogen amount |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140101 |
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| RJ01 | Rejection of invention patent application after publication |