CN106761590A - Many slug high compact filling anti-sand processes - Google Patents
Many slug high compact filling anti-sand processes Download PDFInfo
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- CN106761590A CN106761590A CN201510821958.1A CN201510821958A CN106761590A CN 106761590 A CN106761590 A CN 106761590A CN 201510821958 A CN201510821958 A CN 201510821958A CN 106761590 A CN106761590 A CN 106761590A
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- sand
- slug
- gravel
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- 239000004576 sand Substances 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 26
- 238000012856 packing Methods 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 20
- 238000005457 optimization Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 210000002445 nipple Anatomy 0.000 claims description 12
- 241000237858 Gastropoda Species 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000004575 stone 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention provides a kind of many slug high compact filling anti-sand processes, and many slug high compact filling anti-sand processes include：Step 1, the optimization of technological parameter is carried out according to reservoir characteristics, geological structure, exploitation actuality and numerical simulation these data；Step 2, processes pit shaft, carries out sand washing, drifting, pipe cleaning treatment；Step 3, under enter sand control pipe, and carry out packing tool and set；Step 4, carries out back-up sand construction, and the technological parameter obtained according to optimization carries out the injection that gravel fills slug；Step 5, anti-flushing well is washed out in oil pipe after unnecessary residual sand, tubing string of having given up out, completes sand control construction.Many slug high compact filling anti-sand processes have press Gravel packing segmentation plug filling, filling discharge capacity greatly, back-up sand than it is high the features such as, it is adaptable to the type such as hypotonic, viscous crude, loose sand reservoir improvement and sand control.
Description
Technical field
The present invention relates to oil-gas field development field, a kind of many slug high compact fillings are especially related to anti-
Sand process.
Background technology
Loose sand heavy crude reservoir is one of emphasis of Shengli Oil Field exploitation, but due to by reservoir rockses thing
The limitation of property and fluid properties, this kind of oil reservoir generally occurs that liquid measure is low, aqueous height on stream
And the problems such as shake out serious.Regular circulation filling, squeeze pack etc. are generally coordinated using sand screen at present
Technological measure is processed oil well, but by anti-layer of sand Gravel packing is single, operational discharge capacity and sand
Still there is the sand control life is short and Liquid output loss is serious etc. after going into operation in smaller limitation, measure
Problem, seriously constrains the Efficient Development of such oil reservoir.It is this we have invented a kind of new many slugs
High compact filling anti-sand process, solves above technical problem.
The content of the invention
Many slug high compact filling anti-sand techniques are used it is an object of the invention to provide one kind, oil well is improved
Yield, extension sand control life, many slugs significant to improving such oil reservoir Efficient Development
High compact filling anti-sand process.
The purpose of the present invention can be achieved by the following technical measures：Many slug high compact filling anti-sand works
Process, many slug high compact filling anti-sand processes include：Step 1, according to reservoir characteristics,
Geological structure, exploitation actuality and numerical simulation these data carry out the optimization of technological parameter；Step 2,
Treatment pit shaft, carries out sand washing, drifting, pipe cleaning treatment；Step 3, under enter sand control pipe, and carry out
Packing tool sets；Step 4, carries out the positive back-up sand construction of oil pipe, according to the technological parameter that optimization is obtained
Carry out the injection that gravel fills slug；Step 5, anti-flushing well in wash-off oil pipe after unnecessary residual sand, is lost
Hand acts tubing string, completes sand control construction.
The purpose of the present invention can also be achieved by the following technical measures：
Step 1 includes：Optimization, the sand control screen sand block precision of pack gravel slug are preferably joined with construction
Number optimization.
In step 1, formula D is optimized according to sand control gravel50=(5~6) d50, it is calculated sand control
Use Gravel packing scope, and according to being sand control screen sand block precision optimizing formula w=(1/2-2/3) dmin,
Calculate sand control screen sand block accuracy rating, D in formula50It is sand control Gravel packing, d50It is formation particle
Degree intermediate value, w is sand control screen sand block precision, dminIt is reservoir sand minimum grain size.
In step 1, according to can the sand block principle that can keep compared with high flow conductivity again, according to numerical value
The Gravel packing and slug volume of analog result optimization gravel filling slug, for conventional well, design is not
With two pack gravel slugs of size, for thermal production well, various sizes of three pack gravels are designed
Slug.
In step 1, huge discharge, high sand ratio are taken according under conditions of pump pressure, casing pressure permission,
To obtain the principle of more closely knit sand control water conservancy diversion filling bed, preferably operational discharge capacity 3-5m3/ min, puts down
Equal sand is than 30%-40%, most high sand ratio 80%-100%.
In step 3, sand control pipe is entered under, in the well under enter from top to bottom to be connected with oil pipe, filling
Enter position under the sand control pipe of instrument, tubing nipple, sand control screen, tubing nipple and plug, tubing string
On the one hand sand control screen covering perforated interval is ensured, upper and lower side respectively covers at least more than 1m, on the other hand
Ensure that casing coupling is avoided in packing tool setting position.
In step 3, when packing tool sets, points 4,6,8,10, five steps of 12MPa enter
Row oil pipe is suppressed, each step voltage stabilizing three minutes, is tested to be honored as a queen and is continued to suppress to 18MPa open fill passages,
Tubing pressure is reduced to zero, and dress well head prepares lower step operation.
In step 4, back-up sand construction, the technological parameter obtained according to optimization carries out gravel filling slug
Injection, for conventional well, be divided to two slugs to fill, first fill small size gravel slug, refilling
Large scale gravel slug；For thermal production well, point three slug fillings first fill small size gravel slug,
Refilling medium size precoated sand slug, finally fills large scale gravel slug；Gravel slug is added to and sets
Oil pipe plays pressure, termination of pumping after metering.
In steps of 5, given up out tubing string, torn well head open, upper lifting pipe post has been rotated forward to preceding suspending weight is set
Tubing string is given up, and will from top to bottom be connected with packing tool outer core, tubing nipple, sand control screen, oil pipe
The tubing string of pipe nipple and plug is stayed in well, and packing tool inner core and above tubing string are risen, and complete sand control
Construction.
Many slug high compact filling anti-sand processes in the present invention, by huge discharge and high sand ratio
Construction parameter obtains more closely knit sand control water conservancy diversion filling bed, so as to ensure construction effect, extends sand control
The term of validity, improves oilwell produced fluid amount.The method carries out segmentation plug filling using different size gravel, can
Obtain the sand block barrier with good flow conductivity；Filling construction is using huge discharge, high sand ratio, Gao Jia
Sand intensity, improves the packing of filling bed, extends the sand control measure term of validity.The present invention can be
The flow conductivity of near wellbore oil reservoir is improved while setting up effective oil well sand block barrier, oil well increasing is played
Produce the purpose of sand control.The method have press Gravel packing segmentation plug filling, filling discharge capacity greatly, back-up sand
Than it is high the features such as, it is adaptable to the type such as hypotonic, viscous crude, loose sand reservoir improvement and sand control.
Brief description of the drawings
Fig. 1 is the stream of a specific embodiment of many slug high compact filling anti-sand processes of the invention
Cheng Tu.
Specific embodiment
It is cited below particularly to enable above and other objects, features and advantages of the invention to become apparent
Go out preferred embodiment, and coordinate shown in accompanying drawing, be described in detail below.
As shown in figure 1, Fig. 1 is the flow of many slug high compact filling anti-sand processes of the invention
Figure.
In step 101, according to data such as reservoir characteristics, geological structure, exploitation actuality and numerical simulations
Carry out the optimization of technological parameter, including pack gravel slug optimization, sand control screen sand block precision preferably,
Construction parameter optimization etc..
Formula D is optimized according to sand control gravel50=(5~6) d50, it is calculated sand control Gravel packing
Scope, and according to being sand control screen sand block precision optimizing formula w=(1/2-2/3) dmin, calculate anti-
Sand sieve pipe sand block accuracy rating, D in formula50It is sand control Gravel packing, d50It is formation median grain size,
W is sand control screen sand block precision, dminIt is reservoir sand minimum grain size.According to can sand block again can keep
Compared with the principle of high flow conductivity, according to numerical simulation result optimize gravel filling slug Gravel packing and
Slug volume, for conventional well, designs various sizes of two pack gravel slugs, for thermal production well,
Design various sizes of three pack gravel slugs.Taken according under conditions of pump pressure, casing pressure permission
Huge discharge, high sand ratio, to obtain the principle of more closely knit sand control water conservancy diversion filling bed, preferably construction is arranged
Amount 3-5m3/ min, average sand is than 30%-40%, most high sand ratio 80%-100%.
In step 102, pit shaft is processed, sand washing, drifting, pipe cleaning handling process are carried out by treatment standard；
In step 103, under enter sand control pipe, by operational procedure in the well under enter and be connected with from top to bottom
The sand control pipe of oil pipe, packing tool, tubing nipple, sand control screen, tubing nipple and plug.Pipe
Enter under post position on the one hand ensure sand control screen covering perforated interval (upper and lower side respectively covering at least 1m with
On), on the other hand ensure that casing coupling is avoided in packing tool setting position.
In step 104, packing tool sets, points 4,6,8,10, five steps of 12MPa carry out oil
Pipe is suppressed, each step voltage stabilizing three minutes, is tested to be honored as a queen and is continued to suppress to 18MPa open fill passages, oil
Pipe pressure is reduced to zero, and dress well head prepares lower step operation.
In step 105, the positive back-up sand construction of oil pipe, the construction parameter obtained according to optimization carries out gravel and fills
The injection of slug is filled out, for conventional well, is divided to two slugs to fill, first fill small size gravel slug,
Refilling large scale gravel slug；For thermal production well, point three slug fillings first fill small size gravel
Stone slug, refills medium size precoated sand slug, finally fills large scale gravel slug.Gravel section
Oil pipe plays pressure, termination of pumping after plug is added to design flow.
In step 106, anti-flushing well washes out unnecessary residual sand in oil pipe.
In step 107, tubing string of having given up out tears well head open, and upper lifting pipe post is rotated forward to preceding suspending weight is set
Tubing string is given up, and will from top to bottom be connected with packing tool outer core, tubing nipple, sand control screen, oil pipe
The tubing string of pipe nipple and plug is stayed in well, and packing tool inner core and above tubing string are risen, and complete sand control
Construction.
Claims (9)
1. the high compact filling anti-sand process of slug more than, it is characterised in that many slug high compacts
Filling anti-sand process includes：
Step 1, according to reservoir characteristics, geological structure, exploitation actuality and numerical simulation, these data are entered
The optimization of row technological parameter；
Step 2, processes pit shaft, carries out sand washing, drifting, pipe cleaning treatment；
Step 3, under enter sand control pipe, and carry out packing tool and set；
Step 4, carries out back-up sand construction, and the technological parameter obtained according to optimization carries out gravel filling slug
Injection；
Step 5, anti-flushing well is washed out in oil pipe after unnecessary residual sand, and tubing string of having given up out completes sand control
Construction.
2. many slug high compact filling anti-sand processes according to claim 1, its feature exists
In step 1 includes：Optimization, the sand control screen sand block precision of pack gravel slug are preferably joined with construction
Number optimization.
3. many slug high compact filling anti-sand processes according to claim 2, its feature exists
In in step 1, according to sand control gravel optimization formula D50=(5~6) d50, it is calculated sand control
Use Gravel packing scope, and according to being sand control screen sand block precision optimizing formula w=(1/2-2/3) dmin,
Calculate sand control screen sand block accuracy rating, D in formula50It is sand control Gravel packing, d50It is formation particle
Degree intermediate value, w is sand control screen sand block precision, dminIt is reservoir sand minimum grain size.
4. many slug high compact filling anti-sand processes according to claim 2, its feature exists
In, in step 1, according to can the sand block principle that can keep compared with high flow conductivity again, according to numerical value
The Gravel packing and slug volume of analog result optimization gravel filling slug, for conventional well, design is not
With two pack gravel slugs of size, for thermal production well, various sizes of three pack gravels are designed
Slug.
5. many slug high compact filling anti-sand processes according to claim 2, its feature exists
In, in step 1, huge discharge, high sand ratio are taken according under conditions of pump pressure, casing pressure permission,
To obtain the principle of more closely knit sand control water conservancy diversion filling bed, preferably operational discharge capacity 3-5m3/ min, puts down
Equal sand is than 30%-40%, most high sand ratio 80%-100%.
6. many slug high compact filling anti-sand processes according to claim 1, its feature exists
In, in step 3, under enter sand control pipe, in the well under enter from top to bottom to be connected with oil pipe, filling
Enter position under the sand control pipe of instrument, tubing nipple, sand control screen, tubing nipple and plug, tubing string
On the one hand sand control screen covering perforated interval is ensured, upper and lower side respectively covers at least more than 1m, on the other hand
Ensure that casing coupling is avoided in packing tool setting position.
7. many slug high compact filling anti-sand processes according to claim 1, its feature exists
In, in step 3, when packing tool sets, points 4,6,8,10, five steps of 12MPa enter
Row oil pipe is suppressed, each step voltage stabilizing three minutes, is tested to be honored as a queen and is continued to suppress to 18MPa open fill passages,
Tubing pressure is reduced to zero, and dress well head prepares lower step operation.
8. many slug high compact filling anti-sand processes according to claim 1, its feature exists
In in step 4, back-up sand construction, the technological parameter obtained according to optimization carries out gravel filling slug
Injection, for conventional well, be divided to two slugs to fill, first fill small size gravel slug, refilling
Large scale gravel slug；For thermal production well, point three slug fillings first fill small size gravel slug,
Refilling medium size precoated sand slug, finally fills large scale gravel slug；Gravel slug is added to and sets
Oil pipe plays pressure, termination of pumping after metering.
9. many slug high compact filling anti-sand processes according to claim 1, its feature exists
In in steps of 5, tubing string of having given up out tears well head open, and upper lifting pipe post is rotated forward to preceding suspending weight is set
Tubing string is given up, and will from top to bottom be connected with packing tool outer core, tubing nipple, sand control screen, oil pipe
The tubing string of pipe nipple and plug is stayed in well, and packing tool inner core and above tubing string are risen, and complete sand control
Construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821958.1A CN106761590A (en) | 2015-11-24 | 2015-11-24 | Many slug high compact filling anti-sand processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821958.1A CN106761590A (en) | 2015-11-24 | 2015-11-24 | Many slug high compact filling anti-sand processes |
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| Publication Number | Publication Date |
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| CN106761590A true CN106761590A (en) | 2017-05-31 |
Family
ID=58964347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510821958.1A Pending CN106761590A (en) | 2015-11-24 | 2015-11-24 | Many slug high compact filling anti-sand processes |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503717A (en) * | 2017-09-14 | 2017-12-22 | 中国海洋石油总公司 | A kind of evaluation method of gravel filling sand prevention reservoir protection effect |
| CN110043218A (en) * | 2019-04-04 | 2019-07-23 | 中国石油天然气股份有限公司 | gravel packing method |
| CN110159342A (en) * | 2019-06-12 | 2019-08-23 | 中国石油大学(北京) | Gravel filling simulation experimental system |
| CN110469294A (en) * | 2019-07-31 | 2019-11-19 | 中国海洋石油集团有限公司 | A kind of full-bore anti-sand method for offshore oilfield oil-water well completion and sand control |
| CN111577217A (en) * | 2019-02-19 | 2020-08-25 | 中石化石油工程技术服务有限公司 | Filling-free self-adaptive sand prevention process method |
| CN111804391A (en) * | 2020-06-24 | 2020-10-23 | 程雅雯 | Special gravel manufacturing device for sand prevention and thin production of heavy oil well |
| CN112664164A (en) * | 2019-10-15 | 2021-04-16 | 中国石油化工股份有限公司 | High-water-content later-stage multi-stage stable long-acting sand prevention process method for sandstone oil reservoir |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503717A (en) * | 2017-09-14 | 2017-12-22 | 中国海洋石油总公司 | A kind of evaluation method of gravel filling sand prevention reservoir protection effect |
| CN107503717B (en) * | 2017-09-14 | 2019-07-19 | 中国海洋石油集团有限公司 | A kind of evaluation method of gravel filling sand prevention reservoir protection effect |
| CN111577217A (en) * | 2019-02-19 | 2020-08-25 | 中石化石油工程技术服务有限公司 | Filling-free self-adaptive sand prevention process method |
| CN111577217B (en) * | 2019-02-19 | 2022-04-29 | 中石化石油工程技术服务有限公司 | Filling-free self-adaptive sand prevention process method |
| CN110043218A (en) * | 2019-04-04 | 2019-07-23 | 中国石油天然气股份有限公司 | gravel packing method |
| CN110159342A (en) * | 2019-06-12 | 2019-08-23 | 中国石油大学(北京) | Gravel filling simulation experimental system |
| CN110469294A (en) * | 2019-07-31 | 2019-11-19 | 中国海洋石油集团有限公司 | A kind of full-bore anti-sand method for offshore oilfield oil-water well completion and sand control |
| CN112664164A (en) * | 2019-10-15 | 2021-04-16 | 中国石油化工股份有限公司 | High-water-content later-stage multi-stage stable long-acting sand prevention process method for sandstone oil reservoir |
| CN112664164B (en) * | 2019-10-15 | 2022-10-21 | 中国石油化工股份有限公司 | High-water-content later-stage multi-stage stable long-acting sand prevention process method for sandstone oil reservoir |
| CN111804391A (en) * | 2020-06-24 | 2020-10-23 | 程雅雯 | Special gravel manufacturing device for sand prevention and thin production of heavy oil well |
| CN111804391B (en) * | 2020-06-24 | 2021-10-12 | 南京伟业机械有限公司 | Special gravel manufacturing device for sand prevention and thin production of heavy oil well |
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Application publication date: 20170531 |