SU1463649A1

SU1463649A1 - Method of forming chambers in salt deposits

Info

Publication number: SU1463649A1
Application number: SU874302343A
Authority: SU
Inventors: Игорь Иванович Китаев; Тамара Сергеевна Китаева; Владимир Александрович Резников; Альберт Федорович Студенцов; Всеволод Георгиевич Жигулин; Валентин Петрович Подопригора; Никита Геннадьевич Руденко
Original assignee: Калужский Филиал Мвту Им.Н.Э.Баумана; Братский Хлорный Завод Лесопромышленного Комплекса
Priority date: 1987-09-03
Filing date: 1987-09-03
Publication date: 1989-03-07

Abstract

Изобретение относитс к горкой промьштенности и м.б. использовано при добыче каменных и калийных солей методом подземного растворени . Цель - повьшение эффективности образовани камер (К) за счет улучшени управлени формообразованием путем регулировани скорост ми растворени боковых стенок К. Способ образовани К в отложени х со лей включает бурение скважин (С) на разрабатываемый пласт соли. В С опускают соосно расположенные водоподающую и рассо- лоподъемную колонны.Осуществл ют закачку в С нерастворител с образованием предохранительного сло в верхней части вертикальной выработки и подачу в С растворител (Р). Изменение концентрации Р производ т путем смешивани с технологическим раствором . Дл изменени концентрации Р с технологическим раствором, который подают в нижнюю часть вертикальной выработки, смешивают часть нерастворител . Его непрерьшно перепускают в поток Р на оголовке С дозированными порци ми. При снижении скорости растворени дозу нерастворител уменьшают , при возрастании - увеличивают. 2 з.п. ф-лы. WThe invention relates to an industrial slide and m. used in the extraction of stone and potassium salts by the method of underground dissolution. The goal is to increase the efficiency of chamber formation (K) by improving shaping control by adjusting the dissolution rates of the side walls K. The method of forming K in salt deposits involves drilling wells (C) to the salt formation being developed. In C, co-axially arranged water supply and brine-lifting columns are lowered. A non-solvent is pumped into C to form a protective layer in the upper part of the vertical development and solvent (P) is fed to C. The change in the concentration of P is made by mixing with the process solution. To change the concentration of P, a portion of the non-solvent is mixed with the process solution, which is fed to the bottom of the vertical generation. It is continuously discharged into the flow P on the tip C with metered portions. With a decrease in the dissolution rate, the dose of the non-solvent is reduced, with increasing - it is increased. 2 hp f-ly. W

Description

1one

Изобретение относитс к горной промышленности и может быть использовано при добыче каменных и калийных солей методом подземного растворени .The invention relates to the mining industry and can be used in the extraction of stone and potassium salts by the method of underground dissolution.

Целью изобретени - вл етс повьшение эффективности образовани камер за счет улучшени управлени формообразованием путем регулировани скорост ми растворени боковых стенок камеры .The aim of the invention is to increase the efficiency of the formation of chambers by improving the shaping control by controlling the dissolution rates of the side walls of the chamber.

Способ осуществл ют следующим об-; разом.The method is carried out as follows; at once.

На разрабатываемый пласт соли бур т скважину, обсаживают ее до кровли сол ной залежи. В скважину опускают : соосно расположенные колонны: водо- . ,подающую и рассолоподъемную дл транспортировки технологического раствора - воды и рассола соответст- венйо, при этом нижний конец водопо-| дающей колонны располагают в нижней части камеры. Перед размьтом камеры образуют гидровруб забо скважины. В водоподающую колонну насосом произ3U63649A salt well is drilled on the reservoir under development, which is surrounded by it up to the roof of the salt pool. In the well is lowered: coaxially arranged columns: water. feeding and brine-lifting for transportation of the technological solution - water and brine, respectively, with the lower end of the water supply. giving columns are placed in the lower part of the chamber. Before the chamber is stretched, a hydraulic tube is formed at the well bottom. In the water supply column pump proiz3U63649

од т подачу растворител , в качестс ме сл ни ве ем п о л чod solvent supply, as before

ве которого используют, например, воду.which is used, for example, water.

Перед подачей растворител на раз- .камеры в последнюю подают нерастворитель дл образовани в верхней части камеры сло , предохран ющего ее кровлю от растворени . При размыве камеры перед подачей растворител в скважину в него добавл ют часть нерастворител , хран щегос в специальном резервуаре и предназначенного дл образовани предохранительного сло . Нерастворитель перепускают в поток растворител на оголовке скважины непрерывно дозированными порци ми . Перепуск нерастворител производ т как одновременно с подачей его в Скважину дл образовани предохранительного сло , так и при подаче в скважину только воды ;л растворени .Before feeding the solvent onto the chambers, the non-solvent is fed to the latter to form a layer in the upper part of the chamber that prevents its roof from dissolving. When the chamber is eroded, before feeding the solvent into the well, a portion of the non-solvent is added to it, which is stored in a special tank and intended to form a protective layer. The solvent is transferred to the solvent stream at the top of the well in continuously metered doses. The non-solvent is bypassed at the same time as it is supplied to the Well to form a safety layer, and when only water is fed into the well; dissolves.

10ten

1515

В процессе подъема он перемещаетс с рассолом и растворителем с изменением концентрации последнего, а следовательно, и скорости растворени боковых стенок камеры. Б качестве добавок нерастворител , перепускаемых в поток растворител , может использоватьс часть его, отбираема от нерастворител в скважине на ого- ловке, или часть нерастворител , .подаваемого в камеру из специального резервуара дл пополнени его коли- чества при увеличении диаметра раствор емой камеры.In the process of lifting, it moves with brine and solvent with a change in the concentration of the latter, and hence the dissolution rate of the side walls of the chamber. As additives of a non-solvent transferred to the solvent stream, a part of it can be used, taken from the non-solvent in the well on the base, or part of the non-solvent fed into the chamber from a special tank to replenish its quantity with increasing diameter of the dissolved chamber.

Claims

Claim 1. Method of formation of chambers in salt deposits, including drilling of 20 wells, formation of vertical development, injection of a non-solvent into the well with formation of a safety layer in the upper part of vertical generation, supply of solutions into the well in the well dissolving process, changing the solvent concentration by mixing with the process solution and selecting

u and u

control of basic technological parameters (water consumption, pressure of water and brine, temperature of water and brine, volume of brine and others) is monitored, as well as monitoring of equipment operation modes 30 and the shape and size of dissolution chambers and non-solvent level. In case of deviation of the shape and size of the chamber from the planned, a change in speed is made35

: dissolving the chamber walls by changing the dose of a non-solvent continuously added to the solvent. If necessary, increase the dissolution rate of the concentration of the non-solvent; 40 in water is reduced by decreasing its dose when bypassing the solvent stream, and if it is necessary to reduce the dissolution rate, the dose of the non-solvent is increased, the amount of 45 solvent fed to the stream is not the solvent to calculate the zyut, taking into account the shape and size of the chamber, a solution of e ™ 1mk rocks, surrounding conditions: and so on. The non-solvent supplied through the well to the lower §0 part of the chamber, mixed with a solvent, when it enters the chamber, as having a smaller specific gravity, rises through the chamber to the pre-; storage layer at the roof of the chamber. 55

brine, characterized in that, in order to increase the formation efficiency of chambers by improving shaping control by adjusting the dissolution rates of the side walls of the chamber, a portion of the non-solvent is mixed with the technological solution to change the concentration of solvent, which is continuously transferred to the solvent stream at the wellhead with dispersed in portions, while reducing the dissolution rate, the dose of the non-solvent is reduced, as it grows, the dose is increased, and the technological solution is fed the lower part of the vertical vyrabrtki.

2. A method according to claim 1, characterized in that the dp of the concentration change. The solvent uses a portion of the non-solvent, which is taken from the well.

3. A method according to Claim 1, characterized in that in order to change the concentration of solvent, use a part of a non-solvent, which is fed into the well to form a protective oil.

In the process of lifting, it moves with brine and solvent with a change in the concentration of the latter, and hence the dissolution rate of the side walls of the chamber. As additives of a non-solvent transferred to the solvent stream, a part of it can be used, taken from the non-solvent in the well on the base, or part of the non-solvent fed into the chamber from a special tank to replenish its quantity with increasing diameter of the dissolved chamber.

u and u

brine, characterized in that, in order to increase the efficiency of chamber formation by improving the shaping control by adjusting the dissolution rates of the side walls of the chamber, a portion of the non-solvent is mixed with the technological solution to change the solvent concentration, which is continuously transferred into the solvent stream at the well head in metered doses , while at a decrease in the rate of dissolution, the dose of non-solvent is decreased, as it grows up, it is increased, and the technological solution is fed in the lower part of the vertical swan neck.

3. The method according to Claim 1, characterized in that in order to change the concentration of the solvent, a portion of the non-solvent is used, which is fed into the well of formation of a safety fluid.