... fluids, a different particle size selection method was found to be more useful to prevent reservoir formation damage. This method involves selecting particles that are resistant towards shear-degradation and with a D90 particle size ⪞3/2 the pore size of the formation. By analyzing fluid loss regression...

...Chengwen Wang; Yanji Wang; Ergun Kuru; Erding Chen; Fengfeng Xiao; Zehua Chen; Daoyong Yang Drilling-induced formation damage is the key factor dominating the failure of the development of hydrocarbon reservoirs with low-permeability (i.e., tight formation). In this paper, a new low-damage drilling...

...Xiaodong Han; Liguo Zhong; Yigang Liu; Tao Fang; Cunliang Chen Fine migration is always considered as one of the major mechanisms that are responsible for formation damage. The unwanted reduction of reservoir permeability would result in the decline of water injection and consequent oil production...

... of the medium, and more interestingly on the hydraulic tortuosity as a criterion for changes in preferential flow path. As will be shown, the developed numerical method is able to successfully capture major retention mechanisms responsible for fines migration associated formation damage including external cake...

... Perforating, as schematically depicted in Fig. 1 , is an operation carried out to establish a flow path between the pay zone and the wellbore which strongly affects the total efficiency of the completion [ 14 ]. Formation damage caused by the perforating operation may consist of three elements including...

...Hafiz Mudaser Ahmad; Muhammad Shahzad Kamal; Mohamed Mahmoud; S.M. Shakil Hussain; Mohamed Abouelresh; Mamdouh A. Al-Harthi High-performance drilling fluid was designed for unconventional reservoirs to minimize the formation damage and borehole instability using organophilic clay treated...

...Dujie Zhang; Yili Kang; Lijun You; Jiaxue Li Ultradeep fractured tight sandstone gas reservoir is easy to suffer from severe formation damage during the drill-in process, yet few papers have been published on the corresponding formation damage mechanisms. This paper focuses on a typical ultradeep...

... studies. drilling fluid filter cake formation damage CT scan porosity, permeability Drilling fluids should be designed to have stable rheological properties without sag problems [ 1 ] and contain some additives such as blast furnace slag (BFS) to minimize the spurt loss and produce...

... may cease to be viable. Therefore, it is becoming increasingly important to predict injectivity evolution under such circumstances. The work develops a semi-analytical model for injectivity impairment during a suspension injection for the case of filtration and formation damage coefficients being...

...-free porous media. Permeability decrease due to retained particles depends on the captured particle concentration and on the formation damage coefficient β . Decrease of absolute permeability for water under the presence of residual oil yields the multiplier k rwor . 06 11 2008...

... are shown in horizontal drilling where wells cleanup without the aid of workover rigs where offsets typically require weeks of workover. formation damage microemulsion stimulation drilling Oil and gas wells are stimulated using many techniques involving solvents and/or surfactants...