FIELD: mining.
SUBSTANCE: invention can be used for cluster drilling of deep directional wells into oil and gas on ground. During cluster drilling of wells, method includes removal and designation of boundaries of land plot, removal and temporary storage of fertile soil layer, preparation of base, construction of foundations and ground pit-accumulator of drilling wastes, delivery and installation of cluster drilling rig echelon-type containing movable and stationary equipment with a mechanism for displacement of moving drilling equipment, drilling, attachment, testing and development of well, movement of movable part of drilling equipment on new point within cluster, successive drilling following directional wells. Cluster drilling is performed in two stages. At first stage on a prepared base within territory of cluster site mobile drilling rig series drilled all well under conductor with installation in each series drilled well conductor and cement plug. After multistage mud cleaning is performed separate collected in reusable container harmful drilling wastes. During drilling of next wells under conductor simultaneously at mouth of first well are constructed foundations under movable and stationary equipment of cluster drilling rig for continuation of drilling cycle to design depth and sectional ground pit-accumulator of drilling wastes. At second stage is delivered and installation of movable and stationary equipment of cluster drilling rig, in series after destruction of cement bridge in template of well is continued drilling process of controlled directional wells to productive horizon.
EFFECT: higher drilling efficiency with simultaneous reduction of labour intensity.
1 cl, 4 dwg
