SU796388A1 - Composition for plugging absorption zones - Google Patents

Description

(54) COMPOSITION FOR DRAFTING ABSORBANCE ZONES

10 min) elastic properties and rapidly hardening with the formation in the formation of a material with a spatial lattice, reliably blocking the absorption channel to the water inflow.

Cooked 2 groups of mixtures. One of them contains capron as a polyamide resin, and hydrochloric acid as a mineral acid, another group of mixtures contains nylon as a polyamide resin.

The quantitative composition of the prepared mixtures is given in table. one.

Table 1

35

25 30

Capron

65

70 75 The volume of each prepared mixture is 50 ml. The mixtures are prepared in the following manner. The calculated amount of acid is loaded with the calculated amount of capro or nylon and left for 1015 minutes to dissolve. After this, the resulting mixtures are tested and concluded, firstly; in determining the spreadability of mixtures using the AzNII cone device and, in .BTopftox, in studying the nature of the interaction of mixtures with fresh and mineralized water. The results of the determination of spreadability are given in Table. 2. Table As can be seen from the table. 2, the resulting mixtures have low viscosity and high colloidal properties. This will ensure their mobility and penetration ability into the layers. A study of the nature of the interaction of mixtures with fresh and saline water shows that when water is added, capron in mixtures coagulates with the formation of a gel-like mass, which upon further addition of water becomes viscous and then solidifies, becoming an elastic solid. The abundant presence of water in the solution does not interfere with the coagulation process. At the same time, the volume of the mixture increases 2.5-3.0 times due to

35

25 30

Nylon

65

Claims (2)

70 75 spatial lattice formation. The process of coagulation of mixtures is accompanied by the release of heat, which is favorable for its application at sub-zero temperatures. The cement mixture at contact with rock and metal imposes high adhesion properties and after hardening it is securely held in cavities and rock cracks due to elastic properties. To prepare the mixture, non-deficient polyamide resins are used: yylon, capron (waste of hosiery and other industries) and hydrochloric acid, which is widely used in oil production (GOST 14261-69). The mixture is prepared in a special unit Azinmash-30 (acid). After the mixture is prepared, it is pumped into the well by an acid tank pump. At the same time, in order to prevent coagulation at the moment of trans-porting in nnaci: the mixture is piped between chemical inert liquids, for example, mud. Inert and cross-flow liquids are pumped using a cementing unit. Thus, the entire process of preparing and applying a mixture of pure and completely is mechanized using known means. DETAILED DESCRIPTION OF THE INVENTION A composition for absorbing absorbent zones containing a synthetic polymer and a solvent that is different in order to increase the penetrating power of the composition by reducing its viscosity and increasing its insulating properties, the composition contains a polyamide resin, capron or nylon, and the solvent is concentrated hydrochloric acid, the components being taken in the following ratio, wt%: Polyamide resin — capron or nylon25-35 5 7963886 Concentrated —co-1. Author's certificate-USSR l on the spot The rest 310995, cl. E 21 V 33/14, 1970. Information sources, 2. US patent No. 3658129, taken into account in the examination. cl. i 6-270, pub. 1971.