CN108240211A - Oil-gas-water well directional acid fracturing method - Google Patents
Oil-gas-water well directional acid fracturing method Download PDFInfo
- Publication number
- CN108240211A CN108240211A CN201611220516.2A CN201611220516A CN108240211A CN 108240211 A CN108240211 A CN 108240211A CN 201611220516 A CN201611220516 A CN 201611220516A CN 108240211 A CN108240211 A CN 108240211A
- Authority
- CN
- China
- Prior art keywords
- reservoir
- target
- acid fracturing
- purpose reservoir
- acid
- 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.)
- Pending
Links
- 239000002253 acid Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 230000008901 benefit Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The embodiment of the invention provides a directional acid fracturing method for an oil-gas-water well, which comprises the following steps: determining a target reservoir and a target bottom hole of the target reservoir, wherein the thickness of the target bottom hole is larger than a preset threshold value; controlling a perforating device to perforate in the target reservoir stratum according to a preset direction to obtain a target perforation, wherein the preset direction is the direction of the target reservoir stratum; and controlling acid liquor to flow into the target pore gaps for acid fracturing. Can realize carrying out directional acid fracturing according to preset direction, concentrate promptly to the direction acid fracturing of needs, promote the acid fracturing effect, and then improve the output of oil gas well.
Description
Technical field
The present invention relates to producing well field more particularly to a kind of oil gas water well orientation acid fracturing methods.
Background technology
In order to increase the yield of oil gas field, it is transformed by the method for general acid fracturing or establishes acid etching slit, to link up reservoir
Crack improves Reservoir Seepage channel.
The method of general acid fracturing is mainly during the entire solid space of reservoir progress acid fracturing, acid fracturing, the storage of acid solution edge
Layer dominant flowing path diafiltration.Wherein, dominant flowing path refers to cause in reservoir part shape due to geology and Development Factors
Into low-resistance seepage channel, the waterflooding extraction later stage injects that water forms that apparent advantage flows along this channel and to generate injection water a large amount of
Inefficient cycle.But the method for general acid fracturing, it is difficult to scale acid fracturing be carried out to advantage Reservoir Body, i.e. acid fracturing effect is not notable.
Invention content
The present invention provides a kind of oil gas water well orientation acid fracturing method, for improving acid fracturing effect in reservoir.
First aspect of the embodiment of the present invention provides a kind of oil gas water well orientation acid fracturing method, including：
Determine the target shaft bottom of purpose reservoir and the purpose reservoir, wherein, the thickness in the target shaft bottom is more than in advance
If threshold value；
Perforating system is controlled to carry out perforation according to preset direction in the purpose reservoir, target slit is obtained, wherein described
Preset direction is the direction of the purpose reservoir；
Acid solution is controlled to flow into the target slit and carries out acid fracturing.
Optionally, the control acid solution flows into the target slit and carries out acid fracturing, including：
Control acid solution flows into the target slit by oil pipe and carries out acid fracturing, wherein, the oil pipe is stretched into along first sleeve
The second casing in the purpose reservoir, the first sleeve is than second casing close in well head and the first sleeve
Equipped with packer, the oil pipe is inserted in the packer.
Optionally, the bottom of second casing contacts the target shaft bottom.
Optionally, the control perforating system is before the purpose reservoir carries out perforation according to preset direction, the side
Method further includes：
By purpose reservoir described in the perforating system along the oil pipe tripping in.
Optionally, the perforating system is perforating gun.
Optionally, the control perforating system carries out perforation in the purpose reservoir according to preset direction, including：
The perforating gun is controlled to carry out vertical linear perforation according to preset direction in the purpose reservoir.
Optionally, direction of the direction of the purpose reservoir for advantage Reservoir Body in the purpose reservoir.
Oil gas water well provided by the invention orients acid fracturing method, determines purpose reservoir and the target well of the purpose reservoir
Bottom, control perforating system carry out perforation in purpose reservoir according to preset direction, obtain target slit, and then acid solution is controlled to flow into mesh
It marks slit and carries out acid fracturing, wherein, preset direction is the direction of purpose reservoir, can realize and be oriented acid according to preset direction
Pressure is concentrated for the direction acid fracturing needed, promote acid fracturing effect, and then improve the yield of oil gas water well.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that the oil gas water well that one embodiment of the invention provides orients acid fracturing method flow schematic diagram；
Fig. 2 is that the oil gas water well that one embodiment of the invention provides orients acid fracturing method application scenarios schematic diagram；
Fig. 3 is that the oil gas water well that further embodiment of this invention provides orients acid fracturing method flow schematic diagram.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of oil gas water well orientation acid fracturing method, can orient acid fracturing according to preset direction.
Fig. 1 is that the oil gas water well that one embodiment of the invention provides orients acid fracturing method flow schematic diagram, as shown in Figure 1, should
Method includes：
S101, purpose reservoir and the target shaft bottom of the purpose reservoir are determined.
Wherein, the thickness in the target shaft bottom is more than predetermined threshold value.During specific implementation, which can be that cement is made
Shaft bottom, have certain thickness, prevent channelling during acid fracturing.
S102, control perforating system carry out perforation in purpose reservoir according to preset direction, obtain target slit.
The preset direction is the direction of purpose reservoir.Such as purpose reservoir is vertical direction, just perforation along vertical direction,
If purpose reservoir is to be at an angle to the horizontal surface, then according to same angle perforation.
The length of target slit can be determined according to core intersection, such as oil reservoir has 3 meters of thickness, then perforation realizes target hole
The length of seam is also at 3 meters or so.
S103, control acid solution flow into target slit and carry out acid fracturing.
The acid solution can include：Preposition acid, acid, displacing acid etc., this is not restricted.
The direction of target slit is consistent with the direction of purpose reservoir, can realize the concentration acid fracturing of preset direction.
In the present embodiment, purpose reservoir and the target shaft bottom of the purpose reservoir are determined, control perforating system is stored up in purpose
Layer carries out perforation according to preset direction, obtains target slit, and then acid solution is controlled to flow into target slit and carries out acid fracturing, wherein, in advance
Set direction is the direction of purpose reservoir, can realize and be oriented acid fracturing according to preset direction, that is, is concentrated for the direction needed
Acid fracturing promotes acid fracturing effect, and then improves the yield of oil gas water well.
Optionally, above-mentioned control acid solution flows into target slit and carries out acid fracturing, Ke Yishi：Control acid solution flows into mesh by oil pipe
It marks slit and carries out acid fracturing.
Fig. 2 is that the oil gas water well that one embodiment of the invention provides orients acid fracturing method application scenarios schematic diagram, and Fig. 2 is with vertical
For the reservoir in direction, the direction of reservoir is unrestricted in actual application.
As shown in Fig. 2, oil pipe 01 stretches into the second casing 04 in purpose reservoir 03 along first sleeve 02.
Wherein, 02 to the second casing 04 of first sleeve is close to well head.
First sleeve 02 includes：Surface pipe and protective casing, surface pipe are set on the outside of protective casing.
First by surface pipe and protective casing lower going-into-well before acid fracturing, and then in 04 lower going-into-well of the second casing, positioned at technology
On the inside of casing, cement the well to 02 and second casing 04 of first sleeve.The target well that thickness is more than predetermined threshold value is squeezed into after well cementation
Bottom 06.
Second casing 04 is located in purpose reservoir 03.
After the completion of target shaft bottom 06, first is fastened on along 02 tripping in oil pipe 01 of first sleeve and packer 05, packer 05
In casing 02, and packer 05 is equipped with through-hole, and oil pipe 01 is plugged in the through-hole of packer 05.
Optionally, the bottom contact target shaft bottom 06 of first sleeve 02, is better protected from acid solution channelling during acid fracturing.
Further, control perforating system further includes before purpose reservoir carries out perforation according to preset direction：By perforation
Device is along oil pipe tripping in purpose reservoir.
Then perforation is carried out using perforating system, target slit 07 as shown in Figure 2 can be obtained.
Optionally, perforating system can be perforating gun, rise by perforating gun after perforation.
Wherein, control perforating system carries out perforation in purpose reservoir according to preset direction, and Ke Yishi, control perforating gun is in mesh
Reservoir according to preset direction, carry out vertical linear perforation.It can better ensure that the direction of target slit and purpose reservoir
Direction is consistent.
Specifically, the direction of above-mentioned purpose reservoir can for the purpose of in reservoir advantage Reservoir Body direction, i.e., stored up with purpose
The direction of the direction signs purpose reservoir of advantage Reservoir Body in layer.
Wherein, when can be used as the slit hole of reservoir in layered distribution and in layer and interlayer forms irregular group
It is during conjunction, then special to be known as Reservoir Body, to emphasize its anisotropism.The saying of Reservoir Body is chiefly used in the storage in crack and Karst formation
Collect the situation based on space.In the bulk such as to have disappeared in primary pore or big set carbonate rock, corrosion hole, seam, hole are almost
Only reservoir space, form be irregular, and people can only describe its shape with rough approximation.At this moment carbonic acid
Base status, which just becomes, blocks (lid) body, it is clear that its occluding body is but irregular nor stratiform.Advantage Reservoir Body can be with
It is the part of all Reservoir Body medium or low resistance seepage flow, but is not defined and be limited with this.
After acid fracturing starts, acid solution enters oil pipe by production tree, and then flow to target slit, you can advantage is stored up with orientation
Collective's acid fracturing, realizes heterogeneous reservoir advantage Reservoir Body orientation acid fracturing, and effective communication reservoir is conducive to the storage of oil gas water well
Layer transformation.
Wherein, production tree is to be located at the component led at oil gas water well top end opening, including being used for measuring and repair
Valve, security system and a series of monitoring instruments.Production tree connects production pipeline and oil pipe from underground, while as oil
The important barrier that gas-water well top is opened with external environs.
Fig. 3 is that the oil gas water well that further embodiment of this invention provides orients acid fracturing method flow schematic diagram, as shown in figure 3,
Complete acid fracturing process can include：
S301, will be in first sleeve and the second casing lower going-into-well.
S302, it cements the well to first sleeve and the second casing.Well cementation can be using the well cementing materials such as cement filling set
Gap between pipe and the borehole wall, to prevent acid solution channelling during acid fracturing.
S303, the target shaft bottom more than predetermined threshold value is squeezed into purpose reservoir.
S304, along first sleeve tripping in oil pipe and packer, wherein, oil pipe is plugged in the through-hole of packer.
S305, packer is fastened in first sleeve.
S306, by perforating system along oil pipe tripping in purpose reservoir.
S307, control perforating system carry out perforation in purpose reservoir according to preset direction, obtain target slit.
S308, outgoing aperture apparatus is played.
S309, control acid solution flow into target slit by oil pipe and carry out acid fracturing.
It in the present embodiment, can orient to advantage Reservoir Body acid fracturing, realize heterogeneous reservoir advantage Reservoir Body orientation acid
Pressure, effective communication reservoir are conducive to the reservoir reconstruction of oil gas water well.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of oil gas water well orients acid fracturing method, which is characterized in that including：
Determine the target shaft bottom of purpose reservoir and the purpose reservoir, wherein, the thickness in the target shaft bottom is more than default threshold
Value；
Perforating system is controlled to carry out perforation according to preset direction in the purpose reservoir, obtains target slit, wherein described default
Direction is the direction of the purpose reservoir；
Acid solution is controlled to flow into the target slit and carries out acid fracturing.
2. according to the method described in claim 1, it is characterized in that, the control acid solution flows into the target slit and carries out acid
Pressure, including：
Control acid solution flows into the target slit by oil pipe and carries out acid fracturing, wherein, the oil pipe stretches into described along first sleeve
The second casing in purpose reservoir, the first sleeve are equipped with than second casing close in well head and the first sleeve
Packer, the oil pipe are inserted in the packer.
3. according to the method described in claim 2, it is characterized in that, the bottom of second casing contacts the target shaft bottom.
4. according to the method described in claim 2, it is characterized in that, described control perforating system in the purpose reservoir according to pre-
Before set direction carries out perforation, the method further includes：
By purpose reservoir described in the perforating system along the oil pipe tripping in.
5. according to the method described in claim 4, it is characterized in that, the perforating system is perforating gun.
6. according to the method described in claim 5, it is characterized in that, described control perforating system in the purpose reservoir according to pre-
Set direction carries out perforation, including：
The perforating gun is controlled to carry out vertical linear perforation according to preset direction in the purpose reservoir.
7. according to claim 1-6 any one of them methods, which is characterized in that the direction of the purpose reservoir is the purpose
The direction of advantage Reservoir Body in reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220516.2A CN108240211A (en) | 2016-12-26 | 2016-12-26 | Oil-gas-water well directional acid fracturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220516.2A CN108240211A (en) | 2016-12-26 | 2016-12-26 | Oil-gas-water well directional acid fracturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240211A true CN108240211A (en) | 2018-07-03 |
Family
ID=62701366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611220516.2A Pending CN108240211A (en) | 2016-12-26 | 2016-12-26 | Oil-gas-water well directional acid fracturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240211A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8701766B2 (en) * | 2010-05-19 | 2014-04-22 | Schlumberger Technology Corporation | Apparatus and methods for completing subterranean wells |
| CN104047587A (en) * | 2014-07-07 | 2014-09-17 | 西安三才石油工程服务有限公司 | Method for multi-direction deep acidification of oil layer |
| CN105257272A (en) * | 2015-09-24 | 2016-01-20 | 中国石油化工股份有限公司 | High-flow-conductivity acid fracturing method for carbonate rock reservoirs |
| CN105464624A (en) * | 2014-08-29 | 2016-04-06 | 中国石油化工股份有限公司 | Well completion method |
| CN105756652A (en) * | 2016-04-28 | 2016-07-13 | 中国石油天然气股份有限公司 | Method for modifying bottom water reservoir by matching quasi-horizontal plane perforation with acidification |
| CN106194145A (en) * | 2016-09-27 | 2016-12-07 | 西南石油大学 | A kind of the most stifled multistage degree of depth network acid fracturing method |
-
2016
- 2016-12-26 CN CN201611220516.2A patent/CN108240211A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8701766B2 (en) * | 2010-05-19 | 2014-04-22 | Schlumberger Technology Corporation | Apparatus and methods for completing subterranean wells |
| CN104047587A (en) * | 2014-07-07 | 2014-09-17 | 西安三才石油工程服务有限公司 | Method for multi-direction deep acidification of oil layer |
| CN105464624A (en) * | 2014-08-29 | 2016-04-06 | 中国石油化工股份有限公司 | Well completion method |
| CN105257272A (en) * | 2015-09-24 | 2016-01-20 | 中国石油化工股份有限公司 | High-flow-conductivity acid fracturing method for carbonate rock reservoirs |
| CN105756652A (en) * | 2016-04-28 | 2016-07-13 | 中国石油天然气股份有限公司 | Method for modifying bottom water reservoir by matching quasi-horizontal plane perforation with acidification |
| CN106194145A (en) * | 2016-09-27 | 2016-12-07 | 西南石油大学 | A kind of the most stifled multistage degree of depth network acid fracturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109307755B (en) | Physical simulation experiment device and method for gas reservoir water invasion and water drainage gas production | |
| CN102926770B (en) | Underground draining and grouting process in thin bedrock and thick loose sand layer rich water areas | |
| CN104653161B (en) | The fracturing integrated anti-reflection drainage device of underground coal mine pulsed water slot and method | |
| CN103967507B (en) | A kind of curtain-grouting technique being suitable for rich water mine down-hole exploitation water blockoff | |
| MX2008010963A (en) | Well planning system and method. | |
| CN108412477A (en) | A kind of method that intermittent part blocks seam in seam in volume fracturing | |
| CN107939368A (en) | The real-time control method of hydraulic fracture complexity in a kind of same fracturing section of well of improving the standard | |
| CN104594870B (en) | Fracturing production increasing method | |
| CN106285645B (en) | A kind of low permeability fractured edge-bottom water gas reservoir water enchroachment (invasion) positioning physical simulating method | |
| WO2011132040A3 (en) | Utilisation of tracers in hydrocarbon wells | |
| CN107355206A (en) | A kind of shale gas horizontal well refracturing temporarily blocks up critical pressure method of testing | |
| US20210108491A1 (en) | Integrated construction method of fracturing and tertiary oil recovery for low-permeability reservoir | |
| CN104695895A (en) | Plugging method integrating channel blocking and leakage plugging | |
| CN106294915A (en) | Beach shallow sea oil field based on well group platform development well location method for designing | |
| CN108180002B (en) | Coal mine underground coal seam hydraulic pressure-cutting coupling permeability increasing method | |
| CN206468372U (en) | A kind of automatic slag-discharging water draining device of gas pumping pipe | |
| CN105863581A (en) | Oil extraction method for controlling water and increasing oil of high-water-content oil well of buried hill oil reservoir | |
| CN108240211A (en) | Oil-gas-water well directional acid fracturing method | |
| CN104863185B (en) | The closure barrier technology of seepage well | |
| CN206205937U (en) | A kind of post-grouting device of oil storage cavern | |
| CN104453983B (en) | On a kind of half-edge coal seam layer-through drilling, anti-reflection and pumping method is let out in pressure | |
| CN103048252A (en) | Testing method of plugging rate of repeated fracturing plugging agent | |
| Hamling et al. | Brine extraction and storage test (BEST): enhancing CO2 storage through active reservoir management | |
| CN106869880B (en) | Sandstone reservoir acidification method | |
| CN102477849A (en) | Selective water-plugging technological process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180703 |
|
| RJ01 | Rejection of invention patent application after publication |