CN107780916A - High acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks - Google Patents
High acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks Download PDFInfo
- Publication number
- CN107780916A CN107780916A CN201710860589.6A CN201710860589A CN107780916A CN 107780916 A CN107780916 A CN 107780916A CN 201710860589 A CN201710860589 A CN 201710860589A CN 107780916 A CN107780916 A CN 107780916A
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- China
- Prior art keywords
- agent
- control
- stitched
- acid fracturing
- overlay film
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
Abstract
The invention discloses a kind of control suitable for Deep Carbonate Rocks to stitch high acid fracturing method, and this method comprises the following steps：Step 1：Filming agent is prepared, phenol, resorcinol, anacardol are added in reactor, heated up after well mixed；Thermoplastic resin solid is obtained after adding formalin drying and dewatering；Step 2：Prepare overlay film control and stitch high agent；Step 3：The addition of high agent is stitched in overlay film control when acid fracturing is constructed；Step 4：The addition of construction cured later agent, polyethylene is coated on methenamine surface granular curing agent is made, acid fracturing is constructed the replacement stage, curing agent is carried using slippery water and enters stratum, termination of pumping makes curing agent settle and be contacted with the high agent of control seam for 4 hours, the irreversible solidified resin of high cementing strength is formed, blocks stratum Di Shui.The present invention is poor by strengthening human-cutting high slope stability and increase vertical stress, improves Deep Carbonate Rocks control seam peracid and is pressed with efficiency, increases economic benefit.
Description
Technical field
The present invention relates to Oil-Gas Field Development Engineering-reservoir stimulation field, more particularly to one kind to be applied to deep layer carbonic acid
High acid fracturing method is stitched in the control of rock salt.
Background technology
On the definition of deep layer, in the world still without strict standard, the definition of country variant, different institutions to deep layer is simultaneously
Differ.Oil-gas reservoir of the buried depth more than 15000 feet (4500m) is substantially defined as deep-seated oil gas reservoir in the world at present.Marine facies
Carbonate rock occupies particularly important status in global Oil Gas production.Counted within 2000 according to HIS, Marine Carbonate Rocks oil gas
Stock number accounts for the 70% of Global Oil and Gas Resources total amount, and explored Recoverable oil and gas reserves account for global Oil Gas recoverable reserves total amount
50%.Global Oil Gas yield in 2011, Marine Carbonate Rocks account for the 63% of its total amount.With international energy imbalance between supply and demand
Become increasingly conspicuous, Carbonate Oil gas exploration have accumulated the sight in the world, and exploration and development input also increases therewith, Deep Carbonate Rocks
Have become the focus of global Oil Gas exploration and development.The patterns of giant carbonate fields main productive layers being previously found for 9 years to global 200d
The statistics of buried depth change shows that major oil and gas field of the global main productive layers buried depth more than 4000m accounts for sum before 2000
14.8%；Since 2000, this data has accounted for the 58.6% of sum.Deep Carbonate Rocks have become the whole world and found greatly
The key areas of type oil gas field, some hot zones particularly explored in the recent period, the carbon found in the recent period such as Latin America and the Far East Area
Carbonate Rocks oil gas field, main productive layers buried depth are general all in more than 4000m.Part large oil and gas fields main productive layers buried depth exceedes
5000m, such as the Yoloten-Osman Giant Gas Fields and the Iranian Kish2 found in 2005 that Turkmenistan in 2004 is found
Giant Gas Fields etc..
The general intrinsic fracture development of Deep Carbonate Rocks, fragility is strong, and longitudinal stress difference is small, vertical fracture height control difficulty
Greatly.Current carbonate rock control stitches high acid fracturing and typically uses for reference sandstone reservoir human-cutting high slope technology, is mainly made using flour sand or powder pottery
High sinking agent is stitched for control, because powder pottery has good permeability, the human-cutting high slope of formation has higher percolation ability, produces
Vertical stress difference it is limited, and the human-cutting high slope stability formed is not good enough.
The content of the invention
The defects of in order to overcome in the prior art, there is provided high acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks.
The present invention is realized by following proposal：
High acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks, and this method comprises the following steps：
Step 1：Prepare filming agent
Phenol, resorcinol, anacardol are added in reactor, heated up after well mixed；Add formalin and herein
At a temperature of react 2 hours, thermoplastic resin solid is obtained after drying and dewatering, using obtained thermoplastic resin solid as filming agent
It is standby；
Step 2：Prepare overlay film control and stitch high agent
Slow warm device will be placed in after quartz sand and filming agent uniformly mixing, be heated to filming agent initial flow temperature, and will
System stirs；Separate cluster of grains or individual particle；The cluster of grains of separation is delivered to disc type high temperature circle rolling device successively, its
The temperature of middle disc type high temperature circle rolling device is slightly larger than filming agent softening point, and separation, which is dried, after coating particles dimensionally stable is covered
High agent is stitched in film control；
Step 3：The addition of high agent is stitched in overlay film control when acid fracturing is constructed
During Initial Stage Construction carries the high agent of overlay film control seam using slippery water and enters stratum, and termination of pumping treats that high agent sedimentation is stitched in overlay film control, and
Soften adhesion at the formation temperature, form impermeable interlayer；
Step 4：The addition of construction cured later agent
Polyethylene is coated on methenamine surface granular curing agent, acid fracturing construction replacement stage, using cunning is made
Slip water carrying curing agent and enter stratum, termination of pumping makes curing agent settle and be contacted with the high agent of control seam for 4 hours, forms high cementing strength
Irreversible solidified resin, block stratum Di Shui.
In step 1, the phenol, resorcinol, the mass ratio of anacardol are 25：4：1.
In step 2, in step 2, the mass ratio of the quartz sand and filming agent is 4:1.
In step 3, the high agent of control seam that During Initial Stage Construction carries concentration 60-120kg/m3 using slippery water enters stratum.
Beneficial effects of the present invention are：
The present invention forms new control by research and development and stitches high diversion agent and process, meets that deep carbonate reservoirs (bury
It is more than 5500 meters deeply, temperature is higher than 120 DEG C) the high acid fracturing needs of control seam.By strengthening human-cutting high slope stability and increasing vertical answer
Power is poor, improves Deep Carbonate Rocks control seam peracid and is pressed with efficiency, increases economic benefit.
Embodiment
With reference to specific embodiment, the present invention is further described：
High acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks, and this method comprises the following steps：
Step 1：Prepare filming agent
Phenol, resorcinol, anacardol are added in reactor, heated up after well mixed；Add formalin and herein
At a temperature of react 2 hours, thermoplastic resin solid is obtained after drying and dewatering, using obtained thermoplastic resin solid as filming agent
It is standby；
Step 2：Prepare overlay film control and stitch high agent
Slow warm device will be placed in after quartz sand and filming agent uniformly mixing, be heated to filming agent initial flow temperature, and will
System stirs；Separate cluster of grains or individual particle；The cluster of grains of separation is delivered to disc type high temperature circle rolling device successively, its
The temperature of middle disc type high temperature circle rolling device is slightly larger than filming agent softening point, and separation, which is dried, after coating particles dimensionally stable is covered
High agent is stitched in film control；
Step 3：The addition of high agent is stitched in overlay film control when acid fracturing is constructed
During Initial Stage Construction carries the high agent of overlay film control seam using slippery water and enters stratum, and termination of pumping treats that high agent sedimentation is stitched in overlay film control, and
Soften adhesion at the formation temperature, form impermeable interlayer, change stress state, reaching the lower high extension of seam of effectively control prevents ditch
The purpose of logical bottom water body.
Step 4：The addition of construction cured later agent
Polyethylene is coated on methenamine surface granular curing agent, acid fracturing construction replacement stage, using cunning is made
Slip water carrying curing agent and enter stratum, termination of pumping makes curing agent settle and be contacted with the high agent of control seam for 4 hours, under the conditions of reservoir temperature
Under curing agent effect curing reaction occurs for the composite after softening, forms the irreversible solidified resin of high cementing strength, reaches
To the purpose of closure stratum bottom water.
In step 1, the phenol, resorcinol, the mass ratio of anacardol are 25：4：1.
In step 2, in step 2, the mass ratio of the quartz sand and filming agent is 4:1.In step 3, construction
The high agent of control seam that initial stage carries concentration 60-120kg/m3 using slippery water enters stratum.
The needs of high conceptual design are stitched according to control, the present invention needs particle diameter for 30/40 mesh, 40/70 mesh, 70/120 mesh isotactic
High agent is stitched in the control of lattice.According to Particle size requirements, screening is individual particle (quartz sand) after present invention cooling
The present invention devises a kind of new laminated quartz sand diversion agent, and quartz is wrapped in from type thermoplastic resin material
Sand surface, at the formation temperature covering material can soften and adhesion, make most quartz sands are mutually viscous to be linked togather so as to shape
Into ultra-low penetration interlayer, it is poor to produce larger barrier stress；Simultaneously inter-adhesive human-cutting high slope has preferable stability, no
It can be washed away and take away by follow-up fracturing fluid.It is poor by strengthening human-cutting high slope stability and increase vertical stress, improve deep layer carbonate
Rock control seam peracid is pressed with efficiency, increases economic benefit.
Although more detailed elaboration is done to technical scheme and has been enumerated, it will be appreciated that for ability
For field technique personnel, modification is made to above-described embodiment or uses equivalent alternative solution, this is to those skilled in the art
It is it is clear that these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the present invention for member
Claimed scope.
Claims (4)
1. high acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks, it is characterised in that this method comprises the following steps：
Step 1：Prepare filming agent
Phenol, resorcinol, anacardol are added in reactor, heated up after well mixed；Add formalin and in this temperature
Lower reaction 2 hours, obtains thermoplastic resin solid after drying and dewatering, obtained thermoplastic resin solid is standby as filming agent
With；
Step 2：Prepare overlay film control and stitch high agent
Quartz sand and filming agent are uniformly placed in slow warm device after mixing, are heated to filming agent initial flow temperature, and by system
Stir；Separate cluster of grains or individual particle；The cluster of grains of separation is delivered to disc type high temperature circle rolling device, which disk successively
The temperature of formula high temperature circle rolling device is slightly larger than filming agent softening point, is separated after coating particles dimensionally stable and dries to obtain overlay film control
Stitch high agent；
Step 3：The addition of high agent is stitched in overlay film control when acid fracturing is constructed
During Initial Stage Construction carries the high agent of overlay film control seam using slippery water and enters stratum, and termination of pumping treats that high agent sedimentation is stitched in overlay film control, and on ground
Soften adhesion at a temperature of layer, form impermeable interlayer；
Step 4：The addition of construction cured later agent
Polyethylene is coated on methenamine surface granular curing agent, acid fracturing construction replacement stage, using slippery water is made
Carry curing agent and enter stratum, termination of pumping makes curing agent settle and be contacted with the high agent of control seam for 4 hours, and form high cementing strength can not
Inverse solidified resin, blocks stratum Di Shui.
2. high acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks according to claim 1, it is characterised in that：Step
In rapid one, the phenol, resorcinol, the mass ratio of anacardol are 25：4：1.
3. high acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks according to claim 1, it is characterised in that：
In step 2, the mass ratio of the quartz sand and filming agent is 4:1.
4. high acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks according to claim 1, it is characterised in that：
In step 3, the high agent of control seam that During Initial Stage Construction carries concentration 60-120kg/m3 using slippery water enters stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860589.6A CN107780916B (en) | 2017-09-21 | 2017-09-21 | A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860589.6A CN107780916B (en) | 2017-09-21 | 2017-09-21 | A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks |
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| Publication Number | Publication Date |
|---|---|
| CN107780916A true CN107780916A (en) | 2018-03-09 |
| CN107780916B CN107780916B (en) | 2019-06-07 |
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| CN201710860589.6A Expired - Fee Related CN107780916B (en) | 2017-09-21 | 2017-09-21 | A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019032940A1 (en) * | 2017-08-11 | 2019-02-14 | Sumitomo Bakelite North America, Inc. | Resorcinol resins and compositions derived therefrom |
Citations (5)
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|---|---|---|---|---|
| CN101839124A (en) * | 2009-03-18 | 2010-09-22 | 中国石油天然气股份有限公司 | Method for controlling extension of reservoir fracturing fracture of oil-gas field |
| CN102925133A (en) * | 2012-10-16 | 2013-02-13 | 中国石油天然气股份有限公司 | Fracturing fluid for controlling extension of fracture and fracturing method |
| CN104564002A (en) * | 2014-12-16 | 2015-04-29 | 中国石油化工股份有限公司 | Pumping stop sand setting fracture-height-controlling acid fracturing process method applicable to carbonate reservoir |
| CN104948161A (en) * | 2015-06-19 | 2015-09-30 | 中国石油化工股份有限公司 | Water controlling and acid fracturing method suitable for carbonate reservoir |
| US20170096886A1 (en) * | 2014-06-05 | 2017-04-06 | Schlumberger Technology Corporation | Method for improved design of hydraulic fracture height in a subterranean laminated rock formation |
-
2017
- 2017-09-21 CN CN201710860589.6A patent/CN107780916B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839124A (en) * | 2009-03-18 | 2010-09-22 | 中国石油天然气股份有限公司 | Method for controlling extension of reservoir fracturing fracture of oil-gas field |
| CN102925133A (en) * | 2012-10-16 | 2013-02-13 | 中国石油天然气股份有限公司 | Fracturing fluid for controlling extension of fracture and fracturing method |
| US20170096886A1 (en) * | 2014-06-05 | 2017-04-06 | Schlumberger Technology Corporation | Method for improved design of hydraulic fracture height in a subterranean laminated rock formation |
| CN104564002A (en) * | 2014-12-16 | 2015-04-29 | 中国石油化工股份有限公司 | Pumping stop sand setting fracture-height-controlling acid fracturing process method applicable to carbonate reservoir |
| CN104948161A (en) * | 2015-06-19 | 2015-09-30 | 中国石油化工股份有限公司 | Water controlling and acid fracturing method suitable for carbonate reservoir |
Non-Patent Citations (1)
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| 张猛等: "《新型井下固化下沉式缝高控制剂的研制》", 《中国胶黏剂》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019032940A1 (en) * | 2017-08-11 | 2019-02-14 | Sumitomo Bakelite North America, Inc. | Resorcinol resins and compositions derived therefrom |
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| Publication number | Publication date |
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| CN107780916B (en) | 2019-06-07 |
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Granted publication date: 20190607 Termination date: 20200921 |