CN101760189A - Non-damage fracturing regulating fluid - Google Patents
Non-damage fracturing regulating fluid Download PDFInfo
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- CN101760189A CN101760189A CN200810158620A CN200810158620A CN101760189A CN 101760189 A CN101760189 A CN 101760189A CN 200810158620 A CN200810158620 A CN 200810158620A CN 200810158620 A CN200810158620 A CN 200810158620A CN 101760189 A CN101760189 A CN 101760189A
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Abstract
A non-damage fracturing regulating fluid relates to a composition of non-damage fracturing fluids used for oil fields. Multiple fracture fluids used in fracturing at present are all vegetable gum-based fracturing fluids. The production and use have certain defects that full swelling is required during preparation, the number of additives used in the fracturing fluids reaches 13, and the preparing method is complicated; analysis carried out according to fracturing operation shows that the average return discharge number of pumped polymers only accounts for 35 to 45%, a large number of polymer residues are trapped in fractures, and insoluble substances in the residues cause certain damage to strata; the fracturing fluids have large long-term damage to the strata. The non-damage fracturing regulating fluid is prepared from inorganic zirconium used as a main additive, epoxypropane, sodium salicylate and water. The inorganic zirconium and the epoxypropane account for 0.1 to 4 wt%, the sodium salicylate accounts for 0.1 to 2 wt%, and the water accounts for 93 to 96 wt%. The present invention has the advantages of simple preparing method and low cost. The number of residues is obviously lower than that of vegetable gum sesbania thickening agents used in the existing fracturing fluids, so the fluid has little damage to the strata. Yield increase effect can be produced.
Description
Technical field: the present invention relates to the composition of oil field with the non-damage fracturing non-damage fracturing regulating fluid.
Background technology: the Oilfield using pressure break is to realize by the reservoir permeability that improves oil, gas reservoir and immediate vicinity of wellbore to improve production capacity.The multiple fracturing liquid that uses in pressure break at present is PLANT GUM WATER BASE FRACTURING FLUIDS, has certain shortcoming when producing and use, as need abundant swelling when preparing; And amount of additives reaches 13 kinds in the pressure break non-damage fracturing regulating fluid, and prescription is complicated; The analysis of carrying out according to 150 waterfrac treatment operations of the U.S. shows that the polymkeric substance that pumps into the on average row of returning has only 35% boundless 5%, and a large amount of polymer residues is trapped in the crack, and wherein contained insolubles can cause certain injury to the stratum; The pressure break non-damage fracturing regulating fluid is big to the injury on stratum, and is secular; Common fracturing liquid can only shear thinning, reduce or cancel external force, and viscosity is expendable.
Summary of the invention: the object of the present invention is to provide a kind of non-damage fracturing non-damage fracturing regulating fluid, it is simple, with low cost that it should have a prescription, little to stratum core permeability injury, recovery of core permeability height, noresidue, the easy characteristics of the row of returning.The present invention is formulated by the inorganic zirconium of host, propylene oxide, auxiliary agent sodium salicylate and water, by weight percentage, inorganic zirconium, propylene oxide, accounts for 0.1%4%, and sodium salicylate accounts for 0.lo/orl%, and water accounts for 93 and modernly foretells 968%.With above-mentioned component according to a conventional method mixing and stirring get final product.Recovery of core permeability of the present invention can reach 95%, uses RV20 viscometer 1,705 one, shearing rate shear 1 hour viscosity greater than 60MPaS, all at the 1 bifurcation order of magnitude, filter loss is little for of the fracturing fluid leakoff coefficent, and the viscosity behind the broken glue is less than 10 side field a, S, the residue behind the broken glue is 0.Less than 100/0, downhole temperature can use with interior at 100 ℃ non-injury fracturing fluid to the injury rate of rate of permeation.The present invention has prescription simply, and is with low cost, little to the injury of stratum core permeability, recovery of core permeability height, noresidue, the easily advantage of the row of returning.
Embodiment one: present embodiment is formulated by the inorganic zirconium of host, propylene oxide, auxiliary agent sodium salicylate and water, and by weight percentage, outstanding machine zirconium, propylene oxide account for 0.1% boundless %, and sodium salicylate accounts for 0.10/1%, and water accounts for 95% one 8%.With above-mentioned each component according to a conventional method mixing and stirring get final product.
Embodiment two: when downhole temperature was in 45 ℃ in the present embodiment, the optimum weight proportioning of the contained each component of non-damage fracturing regulating fluid was: inorganic zirconium, propylene oxide account for 0.7%, sodium salicylate accounts for 0.7%, and water accounts for 98.6%
Embodiment three: downhole temperature is in the time of 50 ℃ in the present embodiment, and the optimum weight proportioning of the contained each component of non-damage fracturing regulating fluid is: inorganic zirconium, propylene oxide account for 0.8% sodium salicylate and account for 0.9 water and account for 98%.
Embodiment four: downhole temperature is in the time of 60 ℃ in the present embodiment, and the optimum weight proportioning of the contained each component of non-damage fracturing regulating fluid is: inorganic zirconium, propylene oxide account for 12% sodium salicylate and account for 0.8% water and account for 98%
Claims (2)
1. non-damage fracturing regulating fluid is characterized in that it is formulated by the inorganic zirconium of host, propylene oxide, auxiliary agent sodium salicylate and water, and by weight percentage, host accounts for the 0.1%-4% auxiliary agent and accounts for 01%-2%, and water accounts for 93%-96%.
2. non-damage fracturing regulating fluid according to claim 1 is characterized in that the difference along with downhole temperature, and the composition proportion of its non-damage fracturing regulating fluid is also different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810158620A CN101760189A (en) | 2008-11-04 | 2008-11-04 | Non-damage fracturing regulating fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810158620A CN101760189A (en) | 2008-11-04 | 2008-11-04 | Non-damage fracturing regulating fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101760189A true CN101760189A (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810158620A Pending CN101760189A (en) | 2008-11-04 | 2008-11-04 | Non-damage fracturing regulating fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101760189A (en) |
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2008
- 2008-11-04 CN CN200810158620A patent/CN101760189A/en active Pending
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| DD01 | Delivery of document by public notice |
Addressee: Zhang Jian Document name: the First Notification of an Office Action |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20100630 |