Transverse Multifractured Horizontal Wells: A Recipe for Success

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractWhile the hydraulic fracturing of vertical wells is perhaps the most widely used method for production/injection enhancement in the petroleum industry, the fracturing of horizontal wells has been used sparsely, mostly in the United States and the North Sea. Usually this involves either longitudinal fractures or treatments with no regard to the well orientation and fracture azimuth. A new abrasive jet cutting tool has now been designed and built specifically for this type of jobs.In this paper we will present all the design and operational challenges that will be faced in such fracturing project, and make recommendations for successful treatments

Effective Strategies in Development Heterogeneous Gas Condensate Carbonate Reservoirs

“…Horizontal multistage fracturing completion in gas wells have been used sparsely in this field [12][13][14] . Horizontal multistage fracturing completion in gas wells have been used sparsely in this field [12][13][14] .…”

A Review of Design Considerations for Fracture Stimulation of Highly Deviated Wellbores

“…One of the principle problems during hydraulic fracturing treatments that can interfere with effective placement of proppants is the creation of excess multiple fractures that continue to extend into the far field. Some of these issues were studied with relation to transverse fracturing of horizontal wells by Soliman et al (2006) and Demarchos et al (2006) as well as others. However, when a wellbore tilts in relation to stress vectors in the reservoir itself, the possible fracturing result quickly becomes more complex (Fig.…”

Oriented Perforating Using Abrasive Fluids Through Coiled Tubing

“…Shown in Figure 6, the perforator used was dressed with two 0.125inch orifices phased at 0 and 180DEG. The phasing of the perforator would be such that holes are oriented along the top and bottom of the casing, as is recommended in horizontal completions 4,5 .…”

“…Previous studies have documented the behavior and effects of transverse fracture stresses comparing horizontal to vertical completions. Maximum stresses act perpendicular to a horizontal wellbore, therefore the need to penetrate the multiple layers is desired 4,5,10 . The simplicity of this eccentric weighted perforating system allows for increased penetration through jet phasing at 0 and 180DEG.…”

“…With coiled tubing already in the wellbore, a post perforating cleanout through the perforator minimizes operating time prior to a stimulation treatment. Additionally removing the abrasive fluid used from perforating, will provide non-obstructed fracture throats allowing the passage of the stimulation and production fluids 4,11 .…”