CN103215026A - Novel fracturing liquid jelly of vegetable gelatin for gas well - Google Patents
Novel fracturing liquid jelly of vegetable gelatin for gas well Download PDFInfo
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- CN103215026A CN103215026A CN2013101817049A CN201310181704A CN103215026A CN 103215026 A CN103215026 A CN 103215026A CN 2013101817049 A CN2013101817049 A CN 2013101817049A CN 201310181704 A CN201310181704 A CN 201310181704A CN 103215026 A CN103215026 A CN 103215026A
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Abstract
The invention relates to a novel fracturing liquid jelly of vegetable gelatin for a gas well. The jelly is prepared from the components in percentage by weight as follows: 0.3-0.35% of fenugreek gum, 0.5-1.0% of antiswelling agent, 0.6-0.8% of cross-linking agent, 0.5-1.0% of clean up additive, 0.05-0.1% of bactericide, 0.5-1.0% of foaming agent, 0.01-0.1% of pH adjustor and 95.65-97.54% of water. The working concentration of fenugreek gum in the novel fracturing liquid jelly of vegetable gelatin for the gas well is low, and the working temperature is from normal temperature to 145 DEG C; the underground operating cost is lowered, and normal production and sustainable development of the gas field are ensured; the research result not only has remarkable economic benefit, but also has important social benefit, so that the jelly has huge popularization and application prospects.
Description
Technical field
The present invention relates to a kind of fracturing fluid gel, particularly a kind of gas well novel plant gum fracturing fluid gel.
Background technology
Long celebrating oil field belongs to the special hypotonic fine and close oil reservoir in low hole, and the oil-gas exploration and development area is big, nearly has that up to ten thousand mouthfuls of wells need carry out fracturing reform an every year, and therefore particularly high-quality fracturing liquid product consumption is big to fracturing liquid.Long at present celebrating oil field adopts hydroxypropyl guanidine colloid system as construction liquid in the gas well fracturing construction usually, though this system fracturing liquid has satisfied the needs of the on-the-spot fracturing technology in oil field preferably, but along with the straight line of guanidine glue price in 2012 is high, and supply channel is single, has caused high cost expenditure and supply unstable to pressing crack construction.Simultaneously, the thickening material working concentration height that this guanidine colloid is, the gel breaker dosage is big, and is bigger to supporting crack flow conductivity injury rate.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art part, a kind of low cost is provided, when can substitute guanidine gum fracturing fluid, it is thorough also to have low, high temperature resistant, the broken glue of thickening material working concentration, to the little gas well of supporting crack flow conductivity injury novel plant gum fracturing fluid gel.It can also realize of the fracturing fluid recycling.
The objective of the invention is to realize by following technical proposal, a kind of gas well novel plant gum fracturing fluid gel, it is characterized in that: it is formulated by following component: fenugreek gum 0.3～0.35%, expansion-resisting agent 0.5～1.0%, linking agent 0.6～0.8%, cleanup additive 0.5～1.0%, sterilant 0.05～0.1%, pore forming material 0.5%～1.0%, pH regulator agent 0.01～0.1%, water 95.65～97.54% are formed, and above-mentioned percentage ratio is mass percent.
Described expansion-resisting agent is a molecular weight less than 40000 the polyquaternium and the compound of Repone K.
Described linking agent is 1,2-two carbon generation ten diboron hexahydrides.
Described cleanup additive is the synthetics of sodium lauryl sulphate and alcohols.
Described sterilant is formaldehyde or glutaraldehyde.
Described pore forming material is a nonionic surface active agent.
Described pH regulator agent is sodium hydroxide or yellow soda ash.
Described fenugreek gum is that trade name is fenugreek gum XYXD-1, and expansion-resisting agent is that trade name is expansion-resisting agent XYFP-1, and cleanup additive is that trade name is that cleanup additive XYWZ-1, pore forming material are that trade name is pore forming material YFP-2.
Described trade name fenugreek gum XYXD-1, trade name expansion-resisting agent XYFP-1, trade name cleanup additive XYWZ-1, trade name pore forming material YFP-2, mentioned reagent is all purchased the long oilfield branch chemical industry group that celebrates in Xi'an.
The preparation technology of described fenugreek gum comprises the steps: to get tonka-bean film abundant swelling 5 hours in water, take out the tonka-bean film after the swelling again, utilize three-roller that the tonka-bean film is carried out extruding puffing, the extruding puffing time is 4 hours, again that film is dry down at 105 ℃, treat that film dries by the fire to leather hard and take out, utilize pulverizer that film is pulverized, requiring the tonka-bean rubber powder to cross SSW0.090/0.063 sieve fineness is 92.5%, the tonka-bean rubber powder is carried out cryodrying under 60 ℃, dry 8 hours take out rubber powder is the fenugreek gum finished product.
The present invention compared with prior art has following technique effect: 1) the thickening material working concentration is low, and novel fenugreek gum pressure break concentration is 0.15～0.35%, and conventional guanidine gum fracturing fluid concentration is 0.25～0.55%.2) have resistant to elevated temperatures effect, 0.35% fenugreek gum fracturing fluid gel temperature resistant capability reaches 145 ℃, and conventional guanidine gum fracturing fluid heatproof is 120 ℃.3) broken glue is fast, and broken glue is thorough, and is little to the injury of supporting crack flow conductivity, and the injury rate is less than 22%, and conventional guanidine gum fracturing fluid to supporting crack flow conductivity injury rate greater than 22%.4) the tonka-bean rubber powder water-insoluble of making is 3.5～9.0%, and water ratio is 6.5～9.0%, has features such as hanging down moisture and low water-insoluble.
Be described in further detail below in conjunction with embodiment and embodiment accompanying drawing composition, performance and implementation method fracturing fluid gel of the present invention, but not as a limitation of the invention.
Description of drawings
Fig. 1 is a fenugreek gum preparation technology schema of the present invention.
Embodiment
Embodiment 1
A kind of gas well novel plant gum fracturing fluid gel, it is formulated by following mass percent by following component: fenugreek gum 0.32%, expansion-resisting agent 0.8%, linking agent 0.7%, cleanup additive 0.8%, sterilant 0.08%, pore forming material 0.8%, pH regulator agent 0.05% and water 96.45% are formed (for optimum formula).Described fenugreek gum is that trade name is fenugreek gum XYXD-1, expansion-resisting agent is that trade name is expansion-resisting agent XYFP-1, cleanup additive is that trade name is cleanup additive XYWZ-1, linking agent is 1,2-two carbon generation ten diboron hexahydrides, sterilant is formaldehyde or glutaraldehyde, and pore forming material is nonionic surface active agent, its trade name pore forming material YFP-2, and the pH regulator agent is a sodium hydroxide.Above-mentioned chemical reagent is all purchased the long oilfield branch chemical industry group that celebrates in Xi'an, and Xianyang, Shanxi province, address city Weicheng District is exposed to the sun 7 the tunnel, postcode 712042.Above-mentioned thickening material is a fenugreek gum, plays aqueous solution viscosifying action; The effect of pore forming material is to produce foam, helps the row of returning after the pressure break; The effect of pH regulator agent is to regulate of the fracturing fluid acid-basicity, delay cross linking time.This frozen glue is applicable to gas well.
Process for preparation is as follows
In high speed agitator, add the 964.5ml tap water, under whipped state, add 3.2 gram fenugreek gums, stir after 3 minutes, add 8 gram expansion-resisting agents, 8 gram cleanup additives more successively, 0. 8 gram sterilant, 8 gram pore forming materials, 0. 5 gram pH regulator agent were stirred 3 minutes, stirred and promptly obtained base fluid of the present invention.
Get above-mentioned base fluid, with wide pH value value test paper, recording base fluid pH value is 7～8; Under the whipped state, add 7 gram linking agents, with wide pH value value test paper, recording crosslinked fracturing liquid pH value is 9, and crosslinking time is 49 seconds, promptly gets frozen glue of the present invention.Although base fluid viscosity only is 22.5mPas, the frozen glue that the crosslinked back of process forms is after 140 ℃ of process PVS rheometers are sheared 90 minutes, and frozen glue viscosity is 68 mPas.And reach same viscosity, the needed hydroxypropyl guanidine of common hydroxypropyl guanidine jelly glue gum concentration at least 0.45%.Frozen glue temperature resistant capability of the present invention reaches 140 ℃, and hydroxypropyl guanidine gum fracturing fluid heatproof is 85 ℃.
Embodiment 2
A kind of gas well novel plant gum fracturing fluid gel, it is formulated by following mass percent by following component: fenugreek gum 0.3%, expansion-resisting agent 0.5%, linking agent 0.6%, cleanup additive 0.5%, sterilant 0.05%, pore forming material 0.5%, pH regulator agent 0.01%, water 97.54% are formed, and described expansion-resisting agent is a molecular weight less than 40000 the polyquaternium and the compound of Repone K; Described linking agent is 1,2-two carbon generation ten diboron hexahydrides.Described cleanup additive is the synthetics of sodium lauryl sulphate and alcohols.Described sterilant is formaldehyde or glutaraldehyde.Pore forming material is nonionic surface active agent, its trade name pore forming material YFP-2; The pH regulator agent is a yellow soda ash; Described fenugreek gum is directly buied from market.This frozen glue is applicable to gas well.Preparation process is with embodiment 1.
Although base fluid viscosity only is 20.5mPas, the frozen glue that the crosslinked back of process forms is after 130 ℃ of process PVS rheometers are sheared 90 minutes, and frozen glue viscosity is 62mPas.And reach same viscosity, the needed hydroxypropyl guanidine of common hydroxypropyl guanidine jelly glue gum concentration at least 0.40%.Frozen glue temperature resistant capability of the present invention reaches 135 ℃, and hydroxypropyl guanidine gum fracturing fluid heatproof is 80 ℃.
Embodiment 3
A kind of gas well novel plant gum fracturing fluid gel, it is formulated by following mass percent by following component: fenugreek gum 0.35%, expansion-resisting agent 1.0%, linking agent 0.8%, cleanup additive 1.0%, sterilant 0.1%, pore forming material 1.0%, pH regulator agent 0.1%, water 95.65% are formed, described expansion-resisting agent is that trade name is expansion-resisting agent XYFP-1, cleanup additive is that trade name is cleanup additive XYWZ-1, linking agent is 1,2-two carbon generation ten diboron hexahydrides, sterilant is formaldehyde or glutaraldehyde, and pore forming material is nonionic surface active agent, its trade name pore forming material YFP-2; The pH regulator agent is a yellow soda ash; Above-mentioned chemical reagent is all purchased the long oilfield branch chemical industry group that celebrates in Xi'an, and Xianyang, Shanxi province, address city Weicheng District is exposed to the sun 7 the tunnel, postcode 712042.Also can buy from other market.This frozen glue is applicable to gas well.Preparation process is with embodiment 1.
As shown in Figure 1: described fenugreek gum is to adopt following processing step preparation: the tonka-bean film of getting 100g abundant swelling 5 hours in the water of 900g, take out the tonka-bean film after the swelling again, utilize three-roller that the tonka-bean film is carried out extruding puffing, the extruding puffing time is 4 hours, again that film is dry down at 105 ℃, treat that film dries by the fire to leather hard and take out, utilize pulverizer that film is pulverized, requiring the tonka-bean rubber powder to cross SSW0.090/0.063 sieve fineness is mass percent for 92.5%(percentage ratio), the tonka-bean rubber powder is carried out cryodrying under 60 ℃, dry 8 hours take out rubber powder is the fenugreek gum finished product.The tonka-bean rubber powder water-insoluble of making is 3.5～9.0%, and water ratio is 6.5～9.0%, has features such as hanging down moisture and low water-insoluble.
Although base fluid viscosity only is 23.5mPas, the frozen glue that the crosslinked back of process forms is after 145 ℃ of process PVS rheometers are sheared 90 minutes, and frozen glue viscosity is 70 mPas.And reach same viscosity, the needed hydroxypropyl guanidine of common hydroxypropyl guanidine jelly glue gum concentration at least 0.45%.Frozen glue temperature resistant capability of the present invention reaches 145 ℃, and hydroxypropyl guanidine gum fracturing fluid heatproof is 90 ℃.
Embodiment 4
This example provides the performance of 0.35%XYXD-1 fracturing fluid gel.Of the fracturing fluid prescription is:
Prescription is as follows for the fracturing liquid base fluid process for preparation of 0.35%XYXD-1+0.5% expansion-resisting agent+0.5% cleanup additive+0.5% pore forming material+0.05% pH regulator agent+0.1% sterilant
In high speed agitator, add the 1000ml tap water, under whipped state, add 3.5 gram XYXD-1, stir after 3 minutes, add 5 gram expansion-resisting agents, 1 gram sterilant, 5 gram cleanup additives, 5 gram pore forming materials, 0.5 gram pH regulator agent more successively, stir 3min, stir, obtain the base fluid of 0.35%XYXD-1.
Get the above-mentioned base fluid of 100 grams, with wide pH value value test paper, recording base fluid pH value is 7～8; Under the whipped state, add 0.8 gram linking agent, crosslinked fracturing liquid pH value is 9, and crosslinking time is 49s.Although base fluid viscosity only is 22.5mPas, the frozen glue that the crosslinked back of process forms is after 140 ℃ of process PVS rheometers are sheared 90 minutes, and frozen glue viscosity is 68 mPas.And reach same viscosity, the needed hydroxypropyl guanidine of common hydroxypropyl guanidine jelly glue gum concentration at least 0.45%.
Embodiment 5
This example has provided the example that the fracturing fluid gel of using embodiments of the invention 1 carries out waterfrac treatment.
Gas field, Shanxi ZJS5 well location is in Lvliang City, Shanxi Province Lin County Cheng Zhuan, and textural basin, the Erdos Jin Xi that belongs to scratches pleater tape.Well depth 2155.00m.Reservoir resistivity 19.0 Ω m, reservoir porosity 11.5%, reservoir permeability 44.15 * 10
-3μ m
2, belong to the special low permeability reservoir in low hole, need to adopt fracturing technique to develop.
On 05 12nd, 2013, the ZJS5 well has been carried out sandfrac.Prepare the frozen glue 270m of embodiment 1 altogether
3, active water 30m
3Main construction parameter is: discharge capacity 2.2m
3/ min, parting pressure 35.0MPa, operation pressure 16.0MPa, termination of pumping pressure 8.5MPa.Used spearhead is 108.0m
3, sand-carrying agent 129.0m
3, displacing liquid 4.9 m
3, average sand always adds sand amount 35.8m than 27.6%
3, total liquid measure 245.0m
3Day produce oil 12.5m
3, daily output water 3.2m
3
This embodiment also can adopt any one the frozen glue among the embodiment 2-4, its effect basically identical, and embodiment 1 and embodiment's 3 is effective.
Part that present embodiment is not described in detail and english abbreviation belong to the common practise of the industry, can search on the net, here not narration one by one.
Novel plant gum fracturing fluid gel of the present invention is applicable to the gas well fracturing construction of different reservoir.The present invention realizes of the fracturing fluid recycling according to the fenugreek gum molecular weight is little with the few characteristics of gel breaker dosage; According to the corresponding gas well fracturing construction of different reservoir ground feature selection liquid.This technology of using the down-hole construction operation can reduce the borehole operation cost, ensure the ordinary production and the Sustainable development in gas field; This achievement in research not only has tangible economic benefit, and has important social benefit, has very big popularizing application prospect.
Claims (10)
1.. gas well novel plant gum fracturing fluid gel, it is characterized in that: it is formulated by following component: fenugreek gum 0.3～0.35%, expansion-resisting agent 0.5～1.0%, linking agent 0.6～0.8%, cleanup additive 0.5～1.0%, sterilant 0.05～0.1%, pore forming material 0.5%～1.0%, pH regulator agent 0.01～0.1%, water 95.65～97.54% are formed, and above-mentioned percentage ratio is mass percent.
2. a kind of gas well novel plant gum fracturing fluid gel according to claim 1 is characterized in that: described expansion-resisting agent is a molecular weight less than 40000 the polyquaternium and the compound of Repone K.
3. a kind of gas well novel plant gum fracturing fluid gel according to claim 1, it is characterized in that: described linking agent is 1,2-two carbon generation ten diboron hexahydrides.
4. a kind of gas well novel plant gum fracturing fluid gel according to claim 1 is characterized in that: described cleanup additive is the synthetics of sodium lauryl sulphate and alcohols.
5. a kind of gas well novel plant gum fracturing fluid gel according to claim 1 is characterized in that: described sterilant is formaldehyde or glutaraldehyde.
6. a kind of gas well novel plant gum fracturing fluid gel according to claim 1, it is characterized in that: described pore forming material is a nonionic surface active agent.
7. a kind of gas well novel plant gum fracturing fluid gel according to claim 1 is characterized in that: described pH regulator agent is sodium hydroxide or yellow soda ash.
8. a kind of gas well novel plant gum fracturing fluid gel according to claim 1, it is characterized in that: described fenugreek gum is that trade name is fenugreek gum XYXD-1, expansion-resisting agent is that trade name is expansion-resisting agent XYFP-1, and cleanup additive is that trade name is that cleanup additive XYWZ-1, pore forming material are that trade name is pore forming material YFP-2.
9. a kind of gas well novel plant gum fracturing fluid gel according to claim 1, it is characterized in that: described trade name fenugreek gum XYXD-1, trade name expansion-resisting agent XYFP-1, trade name cleanup additive XYWZ-1, trade name pore forming material YFP-2, mentioned reagent is all purchased the long oilfield branch chemical industry group that celebrates in Xi'an.
10. a kind of gas well novel plant gum fracturing fluid gel according to claim 1, it is characterized in that: the preparation technology of described fenugreek gum comprises the steps: to get tonka-bean film abundant swelling 5 hours in water, take out the tonka-bean film after the swelling again, utilize three-roller that the tonka-bean film is carried out extruding puffing, the extruding puffing time is 4 hours, again that film is dry down at 105 ℃, treat that film dries by the fire to leather hard and take out, utilize pulverizer that film is pulverized, requiring the tonka-bean rubber powder to cross SSW0.090/0.063 sieve fineness is 92.5%, the tonka-bean rubber powder is carried out cryodrying under 60 ℃, dry 8 hours take out rubber powder is the fenugreek gum finished product.
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| CN201310181704.9A CN103215026B (en) | 2013-05-16 | 2013-05-16 | Novel fracturing liquid jelly of vegetable gelatin for gas well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107325804A (en) * | 2017-07-13 | 2017-11-07 | 陕西省石油化工研究设计院 | A kind of pressure break antiswelling stabilizing agent |
| CN115488988A (en) * | 2022-09-15 | 2022-12-20 | 江苏神鹭农业发展有限公司 | Non-woven fiber board and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325804A (en) * | 2017-07-13 | 2017-11-07 | 陕西省石油化工研究设计院 | A kind of pressure break antiswelling stabilizing agent |
| CN115488988A (en) * | 2022-09-15 | 2022-12-20 | 江苏神鹭农业发展有限公司 | Non-woven fiber board and preparation method thereof |
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| CN103215026B (en) | 2015-01-07 |
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