..., a proactive geosteering decision could be made on time and keep the well in the desired layer. Reservoir Navigation Pre-Job Model and Analysis Abstract Drilling long laterals within Shuaiba limestone reservoir without exit to Nahr-Umar shale in the challenging field "B" that is characterized...

... This horizontal drilling campaign targets two different reservoirs, Shuaiba and Natih. Reaching those reservoirs requires drilling through different formations and a number of sections, which requires different casing points. Fig-1 shows the difference in TVDs between the two reservoirs...

... The target well was planned to be sidetracked from inside the 9 5/8 inch casing of the original hole and to drill a new 8 ½ inch pilot hole section to evaluate water saturation in Reservoir 1 and Reservoir 2 and accordingly define the target reservoir for the horizontal section ( Figures 1...

... coiled tubing drilling (UBCTD) was introduced. In order to address the harsh downhole challenges such as high temperatures, deep burial depths, under pressured reservoirs, abrasive and hard sands and logistical constraints; a fully integrated well delivery solution was developed jointly by the operator...

...Introduction In some aging fields, Short Radius horizontal drilling is economically justified over drilling new wells; and re-entry to drill horizontally into the reservoir from an existing infrastructure will maximize reservoir contact while reducing expenditure. However, short radius wells...

... Abstract In workover phase prior to commencing sidetrack operation, it is required to recover old existing completion string for isolating & abandoning existing reservoir section in accordance with well integrity and global well abandonment standards. Prior to utilization of the coiled...

... Abstract Throughout the last few years, oil company strategies have moved toward recovery of the maximum oil in place from mature fields and reservoirs that were previously considered technically challenging. The Mauddud formation in the Bahrah field is a low permeability carbonate formation...

...Challenges Traditionally steerable motors were being used to drill 6 1/8" in. long-radius curve sections requiring 7-8° DLS to land the well in reservoir. Drilling long-radius curves required drilling through problematic and unstable formations and would require approximately 900 – 1,100ft...

... Abstract X reservoir in one of Iraq's field, is a medium pore, low permeability and small pore throat limestone oil reservoir with poor petrophysical characteristics. This reservoir group in which X reservoir is in constitutes to about 20% of the total resource in place. Conventional...

.... The agent forms a temporary protective film on clay surfaces allowing the acid to react with the remaining parts of the formation. The stimulation treatment fluids can be placed within the open hole reservoir section using two methods. The first utilizes 2-in. by 1-in. concentric coil tubing (CCT) with side...

.... Unique oil and water soluble tracers are embedded in solid polymeric substrates and mounted on specialized carrier subs in each reservoir compartment separated by packers. When oil or water contacts the polymer substrates, the respective tracer is diffused out gradually with time. Produced fluid samples...

... Abstract The horizontal wells are applied to enhance the production rate by increasing the contact area between the wellbore and reservoir, it has been also used to access the highly heterogeneous and unconventional formations. One horizontal well can produce the same amount of 5 vertical wells...

.... Because of this, production is not optimized to account for differences in the production rate or reservoir quality of each lateral. For a well with an upper intelligent completion system (ICS), independent control of flow from each lateral is possible through the use of surface controlled flow control...

... Abstract In global underbalanced drilling (UBD) applications, the main contributing factor for downhole fires is often attributed to the use of air as the primary gaseous phase in the reservoir interval. The industry has adopted a general practice to avoid using air in UBD operations...

... Abstract Rhourde Attar field in the northwestern Algerian desert is exploited from the Lower Devonian sandstone. This formation is composed of sandy and silty-sandy intervals with thin, shaly intercalations. The reservoir is characterized by very porous sands (20 to 25%), which also show...

.... And the artificial fractures have swerved apparently. Application A horizontal well of tight oil reservoir was taken for example. The well length is 1050 m, the porosity of reservoir is 8.6%, the permeability is 0.14 mD, the pore pressure is 30.0 MPa and the maximum-minimum principal stresses difference...

... Abstract Challenges of oil recovery in mature assets continue to increase, requiring horizontal wells to be drilled for longer intervals. To improve the overall production in Kuwait, horizontal injector wells are required in some carbonate reservoirs in north Kuwait fields with the main...

... wettability reservoir soak solution Saudi Arabia surfactant Introduction Understanding and minimizing the formation damage is one of the major factors that must be considered in designing reservoir drilling fluid. There are no fluids today that can guarantee zero damage to the reservoir...

... and production result were breakthroughs in this area. hydraulic fracturing microseismic monitoring Upstream Oil & Gas Efficiency fracture conductivity well performance ordos basin tight oil reservoir Completion Installation and Operations oil reservoir chang 7 productivity treatment design...

... annulus integrity and as such preventing reservoir fluid migration to surface. These approaches have proved successful as they provided real economic and environmental advantages. We have proven that wells can be put back on stream with greatly reduced CAPEX and OPEX exposure, negating the need to drill...