Unlock instant, AI-driven research and patent intelligence for your innovation.

Antiscaling block and its production method

An anti-scaling and fouling technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problems of oil well pump stuck, economic loss, fast dissolving speed, etc.

Inactive Publication Date: 2006-05-10
沈阳市铭阳防腐研究所
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of the petroleum industry, at least thousands of oil wells have to be drilled every year. At the same time, the promotion and implementation of water injection oil recovery technology, coupled with the rise of water content in the early stage of oil well production, an important problem is the pumps and pipes in the oil wells. There are often a lot of scales (mainly composed of calcium carbonate, calcium sulfate and calcium silicate scales) on the rods. Their existence makes oil well pumps stuck, rod broken accidents occur frequently, and the frequency of repairs increases, which brings great harm to production safety. serious impact, but also cause serious economic losses
Most of the antiscalants that were filled in the past were liquid antiscalants, which have the advantages of fast dissolution, short dosing cycle (generally continuous dosing or once every 5-7 days), unstable on-site effect, and require more manpower and material resources. The support side is able to operate, thus relatively increasing the cost of oil production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get respectively 72 parts by weight of ammonia (nitrogen) base trimethylene phosphonic acid (ATMP) salt, 5 parts by weight of acrylic acid-acrylate copolymer, 5 parts by weight of dodecyl dimethyl benzyl ammonium chloride, 10 parts by weight of high-pressure polyethylene Parts by weight, 7 parts by weight of EVA resin, 1 part by weight of sodium hexametaphosphate; after stirring the above materials evenly at room temperature, extruding through an extruder, the skeleton material is in a molten state, and after being loaded into the The pressure molding of 50MPa is a block-shaped slow-dissolving anti-fouling block finished product. In order to facilitate the downhole use of oil wells, it can generally be pressed into cylindrical solids with specifications of Φ60×80 and Φ80×80. This product is suitable for use in oil wells under the condition of 40-70 ℃, and can extend the workover period of oil wells by more than 2 times.

Embodiment 2

[0020] Get 80 parts by weight of ammonia (nitrogen) base trimethylene phosphonic acid (ATMP) salt, 1 part by weight of phosphonic acid group carboxylic acid copolymer, 3 parts by weight of dodecyl dimethyl benzyl ammonium bromide, 15 parts by weight of low-pressure polyethylene Parts by weight, 1 part by weight of sodium tripolyphosphate; production method is identical with embodiment 1. This product is suitable for use in oil wells under the condition of 60-80°C, and can prolong the workover period of oil wells by more than 2 times.

Embodiment 3

[0022] Get 71 parts by weight of hydroxyethylene diphosphonic acid (HEDP) salt, 6 parts by weight of acrylic acid-sulfonic acid copolymer, 4 parts by weight of tetradecyl dimethyl benzyl ammonium chloride, 19 parts by weight of EVA resin; production method Same as Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a slow-release antiscaling blocky medicament preventing facilities from fouling used for producing, collecting and conveying greasy dirt-containing aqueous medium in oil well and for flood pattern, which contains substantially organic phosphonate and bone, and definite multicomponent copolymer, bactericidal agent and inorganic phosphonate being added according to the requirement. By mixing uniformly the materials in room temperature, extrusion machine squeezing molten materials, loading the mold and modeling in a high pressure, the blocky slow-dissolving antiscaling product is prepared. In medium, the antiscaling block can release slowly organic compounds (antiscaling element), which can react to hardness ion in the medium and generate complex compound and chelate complex that can be stable in water and flow following the flowing of medium, thus it shows perfect antiscaling and protective effect.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a high-efficiency slow-release medicament preventive agent for inhibiting the influence of scale in the water injection system on mining, gathering and injection equipment due to changes in working conditions in the process of oil and gas field exploitation and gathering and transportation. Scale. Background technique [0002] In recent years, with the rapid development of the petroleum industry, at least thousands of oil wells have to be drilled every year. At the same time, the promotion and implementation of water injection oil recovery technology, coupled with the rise of water content in the early stage of oil well production, an important problem is the pumps and pipes in the oil wells. There are often a lot of scales (mainly composed of calcium carbonate, calcium sulfate and calcium silicate scales) on the rods. Their existence makes oil well pumps stuck, ro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 于洁祝英剑
Owner 沈阳市铭阳防腐研究所