CN107780916B - A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks - Google Patents
A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks Download PDFInfo
- Publication number
- CN107780916B CN107780916B CN201710860589.6A CN201710860589A CN107780916B CN 107780916 B CN107780916 B CN 107780916B CN 201710860589 A CN201710860589 A CN 201710860589A CN 107780916 B CN107780916 B CN 107780916B
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- China
- Prior art keywords
- agent
- control
- acid fracturing
- stitched
- 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 controls suitable for Deep Carbonate Rocks to stitch high acid fracturing method, method includes the following steps: step 1: preparing filming agent, phenol, resorcinol, anacardol are added in reactor, heated up after mixing；Thermoplastic resin solid is obtained after formalin drying and dewatering is added；Step 2: it prepares overlay film control and stitches 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, make within termination of pumping 4 hours curing agent settle and stitch high agent with control to contact, the irreversible solidified resin of high cementing strength is formed, stratum bottom water is blocked.The present invention is poor by enhancing 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 fields, more particularly to one kind to be suitable for deep layer carbonic acid
High acid fracturing method is stitched in the control of rock salt.
Background technique
About the definition of deep layer, still not stringent standard in the world, country variant, different institutions to the definition of deep layer simultaneously
It is not identical.The oil-gas reservoir in the world substantially by buried depth greater than 15000 feet (4500m) is defined as deep-seated oil gas reservoir at present.Marine facies
Carbonate rock occupies particularly important status in global Oil Gas production.It was counted according to HIS 2000, Marine Carbonate Rocks oil gas
Stock number accounts for about the 70% of Global Oil and Gas Resources total amount, and explored Recoverable oil and gas reserves account for about global Oil Gas recoverable reserves total amount
50%.Global Oil Gas yield in 2011, Marine Carbonate Rocks account for about the 63% of its total amount.With international energy imbalance between supply and demand
It becomes increasingly conspicuous, Carbonate Oil gas exploration has accumulated the sight in the world, and exploration and development investment also increases with it, Deep Carbonate Rocks
Have become the hot spot of global Oil Gas exploration and development.The patterns of giant carbonate fields main productive layers that global 200d 9 years are previously found
The statistical data of the buried depth variation major oil and gas field that global main productive layers buried depth is greater than 4000m before showing 2000 accounts for sum
14.8%；Since 2000, this data has accounted for the 58.6% of sum.It is big that Deep Carbonate Rocks have become whole world discovery
The key areas of type oil gas field, some hot zones especially 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 is generally all in 4000m or more.Part large oil and gas fields main productive layers buried depth is more than
5000m, such as the Yoloten-Osman Giant Gas Fields and the Iranian Kish2 found in 2005 of Turkmenistan discovery in 2004
Giant Gas Fields etc..
The general intrinsic fracture development of Deep Carbonate Rocks, brittleness is strong, and longitudinal stress difference is small, vertical fracture height control difficulty
Greatly.Current carbonate rock control stitches high acid fracturing and generally 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, since powder pottery has good permeability, the human-cutting high slope of formation percolation ability with higher is generated
Vertical stress difference it is limited, and it is not good enough to be formed by human-cutting high slope stability.
Summary of the invention
In order to overcome the defects of the prior art, a kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks is provided.
The present invention is realized by following proposal:
A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks, method includes the following steps:
Step 1: filming agent is prepared
Phenol, resorcinol, anacardol are added in reactor, heated up after mixing；Formalin and herein is added
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 spare；
Step 2: it prepares overlay film control and stitches high agent
Quartz sand and filming agent are placed in slow warm device after evenly mixing, are heated to filming agent initial flow temperature, and will
System stirs evenly；Separate cluster of grains or individual particle；Isolated cluster of grains is successively delivered to disc type high temperature circle rolling device,
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 waits for that high agent sedimentation is stitched in overlay film control, and
Soften adhesion at the formation temperature, forms impermeable interlayer；
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, using cunning
It slips water carrying curing agent and enters stratum, so that curing agent is settled and is stitched high agent with control and contact, form high cementing strength
Irreversible solidified resin blocks stratum bottom water.
In step 1, the phenol, resorcinol, anacardol mass ratio be 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, During Initial Stage Construction stitches high agent using the control that slippery water carries concentration 60-120kg/m3 and enters stratum.
The invention has the benefit that
The present invention forms new control by research and development and stitches high diversion agent and process, meets deep carbonate reservoirs and (buries
It is greater than 5500 meters deeply, temperature is higher than 120 DEG C) the high acid fracturing needs of control seam.By enhancing human-cutting high slope stability and increase vertical answer
Power is poor, improves Deep Carbonate Rocks control seam peracid and is pressed with efficiency, increases economic benefit.
Specific embodiment
The present invention is further described combined with specific embodiments below:
A kind of high acid fracturing method of control seam suitable for Deep Carbonate Rocks, method includes the following steps:
Step 1: filming agent is prepared
Phenol, resorcinol, anacardol are added in reactor, heated up after mixing；Formalin and herein is added
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 spare；
Step 2: it prepares overlay film control and stitches high agent
Quartz sand and filming agent are placed in slow warm device after evenly mixing, are heated to filming agent initial flow temperature, and will
System stirs evenly；Separate cluster of grains or individual particle；Isolated cluster of grains is successively delivered to disc type high temperature circle rolling device,
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 waits for that high agent sedimentation is stitched in overlay film control, and
Soften adhesion at the formation temperature, form impermeable interlayer, change stress state, reaching lower high extend of seam of effectively control prevents ditch
The purpose of logical lower part water body.
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, using cunning
It slips water carrying curing agent and enters stratum, so that curing agent is settled and is stitched high agent with control and contact, under the conditions of reservoir temperature
Under curing agent effect curing reaction occurs for the composite material after softening, forms the irreversible solidified resin of high cementing strength, reaches
To the purpose for blocking stratum bottom water.
In step 1, the phenol, resorcinol, anacardol mass ratio be 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
Initial stage stitches high agent using the control that slippery water carries concentration 60-120kg/m3 and enters stratum.
The needs of high conceptual design are stitched according to control, it is 30/40 mesh, 40/70 mesh, 70/120 mesh isotactic that the present invention, which needs partial size,
High agent is stitched in the control of lattice.According to Particle size requirements, screening is individual particle (quartz sand) after the present invention is cooling
The present invention devises a kind of novel laminated quartz sand diversion agent, and type thermoplastic resin material is selected to be wrapped in quartz
Sand surface, covering material can soften simultaneously adhesion at the formation temperature, make most quartz sands are mutually viscous to be linked togather to shape
At ultra-low penetration interlayer, it is poor to generate biggish barrier stress；The human-cutting high slope of stick to each other has preferable stability simultaneously, no
It can be washed away and take away by subsequent fracturing fluid.It is poor by enhancing 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 having done more detailed elaboration to technical solution of the present invention and having enumerated, it should be understood that for ability
For field technique personnel, modifications to the embodiments described above may be made 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 range.
Claims (4)
1. high acid fracturing method is stitched in a kind of control suitable for Deep Carbonate Rocks, which is characterized in that method includes the following steps:
Step 1: filming agent is prepared
Phenol, resorcinol, anacardol are added in reactor, heated up after mixing；Formalin is added 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: it prepares overlay film control and stitches high agent
Quartz sand and filming agent are placed in slow warm device after evenly mixing, are heated to filming agent initial flow temperature, and by system
It stirs evenly；Separate cluster of grains or individual particle；Isolated cluster of grains is successively delivered to disc type high temperature circle rolling device, which disk
The temperature of formula high temperature circle rolling device is slightly larger than filming agent softening point, and separation dries to obtain overlay film control after coating particles dimensionally stable
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 waits for that high agent sedimentation is stitched in overlay film control, and on ground
Soften adhesion at a temperature of layer, forms impermeable interlayer；
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, using slippery water
It carries curing agent and enters stratum, so that curing agent is settled and is stitched high agent with control and contact, form high cementing strength can not
Inverse solidified resin, blocks stratum bottom water.
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, anacardol mass ratio be 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, During Initial Stage Construction carries concentration 60-120kg/m using slippery water3Control stitch high agent and enter 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 CN107780916A (en) | 2018-03-09 |
| CN107780916B true 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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190048120A1 (en) * | 2017-08-11 | 2019-02-14 | Sumitomo Bakelite Europe N. V. | Resorcinol resins and compositions derived thereform |
Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RS64824B1 (en) * | 2014-06-05 | 2023-12-29 | Geoquest Systems Bv | 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 (4)
| 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 |
| 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)
| Title |
|---|
| 《新型井下固化下沉式缝高控制剂的研制》;张猛等;《中国胶黏剂》;20091231;第18卷(第12期);第17-21页 |
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Granted publication date: 20190607 Termination date: 20200921 |