... intervals, although the execution of the stimulation programme brought significant challenges. This paper introduces the Breagh Field, discusses the reasons behind the change in completion design to include hydraulic fracture stimulation, considers the challenges associated with fracture placement in high...

... Abstract Effective and uniform placement of treatment fluid across multiple zones can be challenging. This is particularly true during stimulation or remedial treatments for formation sand control, as well as during water shutoff treatments. Such challenges can be greatly enhanced when a long...

.... perforation diameter Upstream Oil & Gas plane stimulation built-in-casing perforation explosive charge bic perforation Barree entry pressure Completion Installation and Operations diameter tortuosity perforation method nozzle fracture perforation permeability placement perforation tunnel...

... Abstract Candidate recognition in mature brown fields and depleted fields for stimulation has always been a challenging task. It has become a common practice for many operators that when all else fails they turn to stimulating the well. The application of fracturing for any poor producer...

... hydraulic fracturing stimulation, horizontal well drilling, and enhanced oil recovery amongst others. The vast majority of the production wells are completed with cemented 7” liners, and artificially lifted with electric submersible pumps with downhole gas separators. Mature-Field Development Strategy...

... as a function of the mineral content. The optimum concentration of the HF was proven to adopt an inverse relationship with the mineral concentration. The proposed relationship can be used to determine the optimum acid concentration required for sandstone stimulation. Upstream Oil & Gas optimum...

... the fracturing pressure to keep coal cleats and shale fractures open during water-gas production. Graded proppant injection in CBM and SG reservoirs can: stimulate a stress sensitive cleat system below the fracturing pressure; enhance fracturing treatment by invading cleats, lowering fluid leak-off...

... wells, focusing on stimulation design, lessons learned from the fluid testing, experiences, and the continuous improvement of the operational execution process. New producer and injector stimulation designs are generally based on a pad-acid procedure in which a cross-linked gel pad is followed...

... Abstract Historically, leak-off analyses of stimulation fluids have been performed using in-house laboratory procedures. The lack of industry standard procedures to perform leak-off and wall building coefficient analyses of stimulation fluids has introduced inconsistency in both results...

... foam was pumped in slugs in between acid stages. Case histories for performed removing damage jobs are also presented. downhole intervention flow in porous media acidizing Fluid Dynamics Drillstem Testing Upstream Oil & Gas workover fluid formation damage acid stimulation surfactant...

... section. The process of diversion of the stimulation fluid in carbonate wells with the same features has been performed using Viscoelastic surfactant (VES) and polymers based hydrochloric acids. In sandstone wells we cannot use either VES or polymers because there is no enough calcite to react...

... Abstract The stimulation history in offshore Brazil is undergoing into a deep transformation. The requirements of technology, before focused on sandstone reservoirs demand, are being expanded by the need for techniques to stimulate carbonate reservoirs, specially the pre-salt carbonates...

... of hydrates wax remediation scale remediation oilfield chemistry spe 165169 Well Productivity xylene-hcl blend SPE deposit stimulation Case History perforation well 7 intervention formation damage productivity well 9 society of petroleum engineers scale inhibition emulsion saturation...

... Stimulation Volumetric Model" (detailed work is too voluminous to be included here-in but will be subject to an appropriate publication). (8) V d = 7.4805 * { π Φ 1 L / G [ X 1 R 2 + Y 1 Rr − Z 1 r 2 ] ] 1 + π Φ 2 L / G [ X 2 R...

... Abstract Well planning in mature fields can be challenging as the more marginal reserves are targeted. Hydraulic fracture stimulation is a key technology to access multiple reservoir layers and thereby maximize recovery. However, fracture propagation in low porosity carbonates may be strongly...

..., hydrajetting fracture stimulation on three wells. Although the field is non-conventional, so far, it has been developed conventionally. A large amount of the original oil in place still remains in the reservoir. To make the redevelopment project viable, a step change in stimulation techniques...

... abnormally. Also, the ESP amperage charts showed erratic behavior due to solids interference inside the pump resulting in pump failures. A combined scale control and stimulation treatment was applied in three wells in Humma field in Joint Operations to slow down scaling tendency in the formation and tubular...

... and/or matrix acidizing techniques. Conventional matrix stimulation treatments require the use of straddle packers to ensure complete zonal coverage and frequently result in increased water production with no significant increase in oil production, making the treatments uneconomical. To reduce the cost...

... problem in wells in Ecuador. The main challenge is to increase oil production through stimulation in wells with high water cut and a strong aquifer, without increasing the water cut. A treatment was proposed that would remove the damage in the intervals producing oil and "good" water without stimulating...

... Abstract Acid stimulation for damage removal is performed when a well is expected to produce satisfactorily when the skin is approximately equal to one. Blindly flowing acid into the well is the easiest thing to do and is commonly performed when the exposure length of the well is relatively...