CN109577898A - A kind of salt well restorative procedure - Google Patents
A kind of salt well restorative procedure Download PDFInfo
- Publication number
- CN109577898A CN109577898A CN201811376462.8A CN201811376462A CN109577898A CN 109577898 A CN109577898 A CN 109577898A CN 201811376462 A CN201811376462 A CN 201811376462A CN 109577898 A CN109577898 A CN 109577898A
- Authority
- CN
- China
- Prior art keywords
- casing
- salt well
- restorative procedure
- pressure
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 32
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 230000001112 coagulating effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 abstract description 6
- 150000002367 halogens Chemical class 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000012267 brine Substances 0.000 abstract description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to old salt well reutilization technology fields, disclose a kind of salt well restorative procedure, comprising: casing deformation position, cleaning bottom of hole are sought, spy is swept, Artificial floor, casing pressure test, determines position of turning down the bed, and arranges whipstock, and it opens a window, well-digging and etc..The beneficial effect comprise that being opened a window new technology using casing side tracking, old well is repaired, to reach the re-using to old well resource, produces qualified brine, improve old well for halogen ability, rationally utilize resource, save drilling cost.
Description
Technical field
The present invention relates to old salt well reutilization technology fields, more particularly, to a kind of salt well restorative procedure.
Background technique
Extracted by way of well-digging subsurface brine (naturally occur or salt mine water filling after generate), manufactured salt is just well
Salt, the vertical shaft for producing well salt are just salt well or halogen mining well.Main source one of of the well salt as salt raw material, is widely deployed and answers
With.The problems such as salt well mining time is long, is easy to happen salt well plugging, casing deformation causes old salt well to adopt halogen difficulty, even
It can not exploit, cause the waste of salt well resource.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of salt well method for testing tightness is proposed, solve existing
The technical issues of lacking the effective ways for repairing old salt well in technology.
To reach above-mentioned technical purpose, technical solution of the present invention provides a kind of salt well restorative procedure, includes the following steps:
Step 1, seek and determine the casing deformation position of salt well；
Step 2, to casing cleaning bottom of hole, cleaning bottom of hole depth is at casing deformation；
Step 3, casing spy is swept, does wash cycles with flushing liquor, until water is clear, sand is net；
Step 4, Artificial floor sets up the artificial bridge plug for building bottom, Xiang Rengong bridge plug table at the casing deformation of salt well
Cement slurry is injected in face, waits after coagulating, and bores and removes extra loose cement, and hole flushing is anti-clear；
Step 5, the injection pressure liquid pressure testing into casing, if pressure drop is more than threshold value, Artificial floor failure should clear away remnants
Concrete column resumes step 4；If pressure drop is lower than threshold value, Artificial floor success enters step 6；
Step 6, windowing position is determined on the casing near Artificial floor；
Step 7, whipstock is sent into casing and fixing seat to be encapsulated on internal surface of sleeve pipe, whipstock alignment windowing position and towards brill
Into direction；
Step 8, it opens a window, and rotary drilling to window following distance is used as drilling changeover portion；
Step 9, it creeps into, until being drilled into target zone, completes salt well reparation.
Compared with prior art, the beneficial effect comprise that being carried out using casing side tracking windowing new technology to old well
Repair, to reach the re-using to old well resource, produce qualified brine, improve old well for halogen ability, rationally utilize money
Drilling cost is saved in source.
Detailed description of the invention
Fig. 1 is the salt well structural schematic diagram after being repaired using the present invention.
Wherein, 1, surface pipe, 2, casing, 3, artificial bridge plug, 4, reparation well, 5, halogen ore bed.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
By taking certain old salt well as an example, because alkaline residue blocks salt casing, 600 meters of the well depth confirms the salt well at 548 meters
Casing deformation is swept and washes, is explosion, still failed after the operations such as pressure break.
The present invention provides a kind of salt well restorative procedures, include the following steps:
Step 1, seek and determine the casing deformation position of salt well.Ground arrangement sets up drilling machine；Keep construction site smooth,
It is required that well head, vertical shaft, overhead traveling crane sight alignment.
Step 2, to 2 cleaning bottom of hole of casing, cleaning bottom of hole depth is at casing deformation；The cleaning bottom of hole is swept using four-way bit
Hole drilling.Such as it is with diameterFour-way bit cleaning bottom of hole drilling, final cleaning bottom of hole depth of visiting is 543m.Such as well
Lower abnormal conditions need to determine prospect pit depth again according to the actual situation.Drill assembly can be used:It is excessive to refer to that hole wall collapse, drillings occurs in drilling for cleaning bottom of hole herein, or
Because hole wall it is irregular caused by drilling tool cannot descend the former hole depth got into when, and use drilling tool with compared with low-rotate speed finishing hole wall, and with
Silt the operation of object in flushing liquor cooperation cleaning hole up.
Step 3, casing spy is swept, does wash cycles with flushing liquor, until water is clear, sand is net；It is using steel that the spy, which is swept,
The specification of wire brush rotary drilling, wire brush can be usedLong 1m ±.It visits to sweep herein and refers to that drilling tool enters in drilling, side
It swings drill bit side to advance, slightly variation direction can be slightly exited when meeting obstructions and repeats operation.
Step 4, Artificial floor sets up the artificial bridge plug for building bottom, the artificial bridge at the casing deformation of salt well
Plug is wooden column structure, and stopper specification can be usedLong 100cm is sent to specified hole depth 543m with drilling tool and is made
For people's movements and postures of actors bridge.Cement slurry is injected to artificial bridge plug surface, is waited after coagulating, bores and removes extra loose cement, and hole flushing is anti-clear；Cement
Height >=10m is filled in, 1300kg oil well G class g cement is stirred into 1m3Then cement slurry is infused on the bridge plug face in drilling rod tripping in hole
Enter cement slurry, above mention 50m and rinse drilling rod, after Hou Ning 72 hours, bores the loose cement extra except 400m or more, and hole flushing is returned clearly.
Step 5, the injection pressure liquid pressure testing into casing, if pressure drop is more than threshold value, Artificial floor failure should clear away remnants
Concrete column resumes step 4；If pressure drop is lower than threshold value, Artificial floor success enters step 6；The pressure testing, pressure are
7MPa, build the pressure waiting 30 minutes, falling voltage threshold 0.5MPa.Cement plug pressure testing: installation wellhead assembly, with pressure pump (slush pump)
It persistently infuses in clear water to hole, when pressure gauge, which is shown, rises to 7MPa, head valve is closed in termination of pumping, is waited 30 minutes, and pressure gauge is aobvious
Show that pressure drop is no more than 0.5MPa, is considered as Artificial floor success.If pressure drop is more than 0.5MPa, then it is considered as Artificial floor failure, should sweeps
Except residual cement column again Artificial floor, until reaching requirement.
Step 6, windowing position is determined on the casing near Artificial floor, primarily determines that the windowing position of transformation well is
542m。
Step 7, whipstock is sent into casing and fixing seat to be encapsulated on internal surface of sleeve pipe, whipstock alignment windowing position and towards brill
Into direction, with gyro precise positioning whipstock orientation；The setting fixation is to fill the water to suppress into casing, and pressure is not less than
25MPa.Long 3~4m can be used in whipstock specification,Whipstock drilling rod is down toward the depths 540m.
Step 8, it opens a window, and rotary drilling to window following distance is used as drilling changeover portion；The windowing is to adopt
It is opened a window, can be used with milling cone drill bitThe windowing of milling cone drill bit, the light bit pressure of windowing-process, fast revolving speed, on accurate recording machine
Remaining ruler, determination drill casing, and then reaming for several times, mentions brill after determining non-resistance back and forth at window.The rotary drilling is
Using tricone bit, specification be can be usedConstant pressure low speed drilling, drilling distance are 10 meters or so.
Step 9, it creeps into, until being drilled into target zone (i.e. halogen ore bed), completes salt well reparation.Salt well construction after reparation is as schemed
Shown in 1.The drilling is crept into using compact bit, and specification can be used
Preferably, the cleaning solution and pressure fluid are clear water.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (10)
1. a kind of salt well restorative procedure, includes the following steps:
Step 1, seek and determine the casing deformation position of salt well；
Step 2, to casing cleaning bottom of hole, cleaning bottom of hole depth is at casing deformation；
Step 3, casing spy is swept, does wash cycles with flushing liquor, until water is clear, sand is net；
Step 4, Artificial floor sets up the artificial bridge plug for building bottom, Xiang Rengong bridge plug surface note at the casing deformation of salt well
Enter cement slurry, wait after coagulating, bores and remove extra loose cement, and hole flushing is anti-clear；
Step 5, the injection pressure liquid pressure testing into casing, if pressure drop is more than threshold value, Artificial floor failure should clear away residual cement
Column resumes step 4；If pressure drop is lower than threshold value, Artificial floor success enters step 6；
Step 6, windowing position is determined on the casing near Artificial floor；
Step 7, whipstock is sent into casing and fixing seat to be encapsulated on internal surface of sleeve pipe, whipstock alignment windowing position and towards drilling side
To；
Step 8, it opens a window, and rotary drilling to window following distance is used as drilling changeover portion；
Step 9, it creeps into, until being drilled into target zone, completes salt well reparation.
2. a kind of salt well restorative procedure according to claim 1, it is characterised in that: cleaning bottom of hole described in step 2 is using four
Wing drag bit cleaning bottom of hole drilling.
3. a kind of salt well restorative procedure according to claim 1, it is characterised in that: it is using steel that spy described in step 3, which is swept,
Wire brush rotary drilling.
4. a kind of salt well restorative procedure according to claim 1, it is characterised in that: artificial bridge plug described in step 4 is wood
The column structure of matter.
5. a kind of salt well restorative procedure according to claim 1, it is characterised in that: pressure testing described in step 5, pressure are
7MPa, build the pressure waiting 30 minutes, falling voltage threshold 0.5MPa.
6. a kind of salt well restorative procedure according to claim 1, it is characterised in that: fixation described in step 7 is setting be to
Water filling is suppressed in casing, and pressure is not less than 25MPa.
7. a kind of salt well restorative procedure according to claim 1, it is characterised in that: windowing described in step 8 is using milling
Miser opens a window, the light bit pressure of windowing-process, fast revolving speed, and remaining ruler on accurate recording machine, determination drills casing, then comes at window
It returns reaming for several times, mentions brill after determining non-resistance.
8. a kind of salt well restorative procedure according to claim 1, it is characterised in that: rotary drilling described in step 8 is to adopt
It is crept into tricone bit constant pressure low speed.
9. a kind of salt well restorative procedure according to claim 1, it is characterised in that: drilling described in step 9 using
Compact bit drilling.
10. a kind of salt well restorative procedure according to claim 1, it is characterised in that: the cleaning solution and pressure fluid are
Clear water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376462.8A CN109577898B (en) | 2018-11-19 | 2018-11-19 | Salt well repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376462.8A CN109577898B (en) | 2018-11-19 | 2018-11-19 | Salt well repairing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109577898A true CN109577898A (en) | 2019-04-05 |
| CN109577898B CN109577898B (en) | 2021-11-02 |
Family
ID=65923097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811376462.8A Active CN109577898B (en) | 2018-11-19 | 2018-11-19 | Salt well repairing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577898B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185515A (en) * | 1996-12-16 | 1998-06-24 | 张岚 | Side drilling tool with well enclosing function |
| CN102003168A (en) * | 2010-11-01 | 2011-04-06 | 四川久大制盐有限责任公司 | Leaked rock salt cavity low pressure mining technique |
| CN104481494A (en) * | 2014-10-31 | 2015-04-01 | 四川久大制盐有限责任公司 | Method for repairing rock brine wells |
| CN105113976A (en) * | 2015-07-21 | 2015-12-02 | 河南省公路工程局集团有限公司 | Wire-brush-bit rotary drilling jig and method for solving bit burying, falling and jamming |
| CN204851182U (en) * | 2015-07-04 | 2015-12-09 | 中国石油化工股份有限公司 | Water injection well test is from rotating drifting instrument |
| RU2014139996A (en) * | 2014-10-02 | 2016-04-20 | Общество С Ограниченной Ответственностью "Белгорхимпромэнерго" | Method for exploring deposits of potassium and magnesium salts at great depths |
-
2018
- 2018-11-19 CN CN201811376462.8A patent/CN109577898B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185515A (en) * | 1996-12-16 | 1998-06-24 | 张岚 | Side drilling tool with well enclosing function |
| CN102003168A (en) * | 2010-11-01 | 2011-04-06 | 四川久大制盐有限责任公司 | Leaked rock salt cavity low pressure mining technique |
| RU2014139996A (en) * | 2014-10-02 | 2016-04-20 | Общество С Ограниченной Ответственностью "Белгорхимпромэнерго" | Method for exploring deposits of potassium and magnesium salts at great depths |
| CN104481494A (en) * | 2014-10-31 | 2015-04-01 | 四川久大制盐有限责任公司 | Method for repairing rock brine wells |
| CN204851182U (en) * | 2015-07-04 | 2015-12-09 | 中国石油化工股份有限公司 | Water injection well test is from rotating drifting instrument |
| CN105113976A (en) * | 2015-07-21 | 2015-12-02 | 河南省公路工程局集团有限公司 | Wire-brush-bit rotary drilling jig and method for solving bit burying, falling and jamming |
Non-Patent Citations (2)
| Title |
|---|
| 张兆盈 鞠德泉著: "《钻井科技创新与管理创新研究》", 31 July 1999, 石油工业出版社 * |
| 王治国等: "盐井大井斜开窗侧钻水平井绕腔连通技术", 《石油钻采工艺》 * |
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| Publication number | Publication date |
|---|---|
| CN109577898B (en) | 2021-11-02 |
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