Feasibility of Particle Jet as a Drilling Medium for the Development of Deep Complicated Oil-Gas Reservoir

Abstract

The technical problems existing in deep well drilling are becoming more and more predominant during the exploration and development of oil-gas field. The poor formation drillability, low drilling rate and complicated pressure system cause the underground accidents frequent, extend well construction cycle, and make the cost of the project much higher. Therefore, it is urgent to develop new technologies to improve the efficiency of the exploration and development in deep unconventional oil-gas reservoir. The particle jet technology is a new energy-saving way which has a broad application prospect. It can take the way of sucking in particles in annulus space to cycle use the particles, and promote the drilling rate. The feasibility of particle jet as a drilling medium is verified by the theoretical and experimental study, which provides the basis for the design of particle jet tool.

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

“…Further applications of solid particle erosion to rocks and rock-like materials include drilling operations in mining and in the oil and gas industry. The latter application, although known for decades, has attracted again broader interest (Du et al 2012), and notable technical progress has been made recently (Blange and van Nieuwkoop 2011;Harder et al 2010;Tibbitts et al 2009). Abrasive jet systems are capable of drilling through rocks of all types.…”

Solid Particle Erosion of a Limestone Target Surface under Controlled Conditions

“…Once cracks intersect, small pieces of material got separated from the surface and are removed by impinging particles [13][14][15][16][17][18]. e volume of eroded material increases with the impinging particle diameter [19,20], and local heating processes can be inferred from schist SPE [21,22]. In addition, the increase in fracture toughness reduces relative erosion according to a reverse power law that is affected by the impingement velocity [23].…”