RU2144112C1 - Method for construction of collecting pit - Google Patents

Abstract

FIELD: mining industry. SUBSTANCE: method relates to surrounding arrangement of mineral deposits. Collecting pits are used for storing waste resulted from drilling of oil and gas wells and they can be used in construction of hydraulic engineering structures. Realization of method implies ground levelling operations, construction of pit base and waterproofing of pit bottom. Aforesaid operations are performed simultaneously with spreading and compaction of sand-clay mixture with subsequent building of embankment. Application of aforesaid method allows for reduction of cost and period in construction of collecting pit. EFFECT: higher efficiency.

Description

 The invention relates to the arrangement of mineral deposits, in particular to hydraulic structures - cumulative barns on peat soil to accommodate waste well drilling.

 A known method of construction of storage barn, including hydraulic washing of the soil, the construction of the bottom and walls, waterproofing permeable soils (see UDC 622.692.23.072 Kolomeytsev VT "The construction of bases for cluster drilling in Western Siberia." Overview. Ser. "Oilfield construction ", M., VNIIOENG, 1981, p. 18).

 However, this construction technology is characterized by the complexity of the process, since it includes a series of works, one after another: planning and preparing a site for a bush base, hydraulic washing or delivery of soil, construction of a storage barn, and laying of waterproofing material. Each series of works, depending on the terrain, consists of smaller operations, the implementation of which takes a certain amount of time. As a result, the construction cycle of the storage barn is stretched over time.

 Closest to the proposed method is a method of construction of a storage barn, including planning works, waterproofing of permeable soils, which is performed by various compositions, coatings of waterproof materials and other compounds, and the construction of deboning (see RD-3D-133-94 "Environmental Protection Instructions environment during the construction of wells for oil and gas on land ", M., NPO" Drilling equipment ", 1994, S. 40-41).

 The main disadvantage of this technology is a sharp increase in the cost of laying reliable waterproofing of the bottom of the storage barn built on permeable soil. In addition, the construction cycle of the storage barn is increasing, which leads to a rise in the cost of production costs.

 The objective of the invention is to reduce capital costs and the construction time of the storage barn.

 The problem is solved in that in the method of constructing a storage barn, including planning works, waterproofing the bottom of the storage barn and building a deboning, preparing the base of the storage barn on peat soil and waterproofing, it is carried out simultaneously by laying and compacting a sand-clay mixture.

 The proposed technology for the construction of storage barn on peat soil is implemented as follows.

 Sand is prepared by hydraulic washing, during which the washing of silt particles from the sand fraction occurs. The sand is mixed with a small amount of clay powder and a sand-clay mixture up to 20 centimeters thick is applied to the peat area where the storage barn will be located. Tamp the area, which is covered with a layer of sand-clay mixture. The compaction of the upper peat layer occurs due to the penetration of a sand-clay mixture into it. After the deboning construction, the bottom of the barn is covered with coagulation clots of drilling mud with a thickness of 10 centimeters. Clay particles located in the upper layer of peat soil, when exposed to moisture of the drilling fluid, swell and fill the pores that remained even during the compaction of the sand-clay mixture, i.e. clogging of pores occurs, their colmatization. Thus, there is no need to carry out the construction of waterproofing, as a separate type of work, since it is already done in the process of planning and preparing the site for the storage of the barn.

 The proposed technology for the construction of storage barn for the placement of production waste will reduce the construction cycle in time, reduce the cost of construction, aimed at reducing the cost of production.

Claims (1)

 A method of constructing a storage barn, including planning works, waterproofing the bottom of the storage barn and constructing a debris, characterized in that the preparation of the base of the storage barn on peat soil and the waterproofing of its bottom is carried out simultaneously by laying and compacting a sand-clay mixture.