Hydrogenated hot gas chemical solution component and application thereof in increasing yield of horizontal well

A chemical solution, horizontal well technology, applied in the direction of chemical instruments and methods, wellbore/well components, drilling composition, etc., can solve the problem of near-well-area treatment not applicable to horizontal oil and gas wells, and near-well-hole permeability reduction , mining interruption and other problems, to achieve the effect of technical safety, reliability, low cost, and solving blockage

Active Publication Date: 2016-06-22
吉林贯通能源科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these lead to reduced permeability near the well, so the production rate is often only more than 60% of the design, what's more, the oil and gas wells suffer greater damage and the production is completely interrupted
[0005] In the prior art, the thermoc...

Method used

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  • Hydrogenated hot gas chemical solution component and application thereof in increasing yield of horizontal well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Hydrogenation hot gas chemical stimulation test of No. 1 oil well in an oilfield in Xinjiang

[0036] Geological conditions and related parameters of oil well No. 1: reservoir series sandstone and siltstone; medium-porosity and low-permeability oil layers; inner diameter of casing 2 Tubing 3 inner diameter The bottom of the artificial well is 4743m from the ground, the length of the horizontal oil well is 4102-4743m, and the perforation range in the horizontal oil well is 4556.0-4582.0m; the daily fluid production before the stimulation operation is 0.8t, of which the daily oil production is 0.2t;

[0037] From the above data, it can be concluded that the volume of the reaction zone is 7250L. Prepare No. 1 solution 4000L or 5200kg, No. 2 solution 3250L or 5200kg.

[0038] Solution No. 1 contains: Ammonium Nitrate NH 4 NO 3 , hydrocarbon fuel, sodium chloride NaCl, nitric acid HNO 3 , emulsifier, and the respective mass percentages of water: 55%, 13%, 5...

Embodiment 2

[0044] Example 2: Hydrogenation hot gas chemical stimulation test of No. 2 oil well in an oilfield in Xinjiang

[0045] Geological conditions and related parameters of oil well No. 2: reservoir series sandstone and siltstone; medium-porosity and low-permeability oil layers; inner diameter of casing Tubing 3 inner diameter The artificial well bottom is 4933m; the horizontal well section is 4530-4933m; the perforation range is 4808.5-4918m; the daily fluid production before the stimulation operation is 2.9t, of which the daily oil production is 1.3t.

[0046] From the above data, the volume of the reaction zone is 4500L. Prepare 2500 liters or 3200 kg of No. 1 solution and 2000 liters or 3200 kg of No. 2 solution.

[0047] Solution No. 1 contains: Ammonium Nitrate NH 4 NO 3 , hydrocarbon fuel, potassium chloride KCl, nitric acid HNO 3 , emulsifier, and water respectively by mass percentage: 53%, 13%, 4.5%, 9%, 1%, 19.5%. The mass of each component is ammonium nitrate NH ...

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Abstract

The invention belongs to the technical field of oil exploitation and particularly relates to a hydrogenated hot gas chemical solution component and application thereof in increasing the yield of a horizontal well. The component is formed by mixing a first solution and a second solution at 1:1 by mass. The first solution is prepared from, by the mass sum of 100%, 50-55% of ammonium nitrate NH4NO3, 8-13% of hydrocarbon fuel, 4.5-5.5% of sodium chloride NaCl or potassium chloride KCl, 7-9% of nitric acid HNO3, 0.5-3.0% of an emulsifying agent and 15-20% of water, wherein the emulsifying agent is a mixed solution of polyethylene polyamines and tall oil fatty acid at 3:(0.5-0.7) by mass. The second solution is prepared from, by the mass sum of 100%, 22-26% of sodium nitrate NaNO2, 25-31% of urea CO(NH2)2, 20-25% of sodium borohydride NaBH4 and 27-31% of tetrachloroethylene C2C14. By means of the hydrogenated hot gas chemical solution component and application thereof in increasing the yield of a horizontal well, the yield of a horizontal well is increased while the problem of blockage of a horizontal well is solved, the technology is safe, reliable and low in cost, and meanwhile a stratum is protected.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a hydrogenation hot gas chemical solution component and its application in increasing production of horizontal wells. Background technique [0002] In this century, the structure of oil and gas wells in the oil and gas industry has become significantly more complex and tends to be horizontal, thereby increasing the drainage area of ​​ore beds. At the same time, it is believed that horizontal oil and gas wells have a larger contact area with rock formations, which can increase the release of hydrocarbons in the well. Extraction efficiency and acceleration capabilities. The construction, development and operation of horizontal wells and the inflow enhancement of hydrocarbons are significantly different from the hydrocarbon recovery techniques of vertical wells. Because of this, the methods used for vertical wells are largely unsuitable for horizontal oil ...

Claims

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Application Information

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IPC IPC(8): C09K8/592E21B43/24E21B43/16
CPCC09K8/592E21B43/168E21B43/24
Inventor 韩晓松西莫年科·阿列克谢韩炜周亮李俊志
Owner 吉林贯通能源科技有限责任公司
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