... to details are given below. Formation damage. 1. Limestone, dolomite and sandstone acidizing tech- niques. Reservoir description and lithology. Reservoir system. Performance evaluation of stimulated wells. try to remove it by remedial action: When reservoirs range from 63% to 99% carbon- ates, acid...

... Abstract Acid Fracturing has been one of the most effective stimulation technique applied in the carbonate formations to enhance oil and gas production. The traditional approach to stimulate the carbonate reservoir has been to pump crosslinked gel and acid blends such as plain 28% HCL...

... evaluation reduction reaction permeability poisson petroleum engineer microfracture in-situ generated acid catalyzed core flooding experiment tcf flow assurance indication thermochemical fluid pore system evaluation Introduction Formation damage is one of the critical problems in the oil...

... effectiveness evaluation reservoir complex laboratory acid effectiveness evaluation clayey agbada formation evaluation Abstract This paper presents data that attest to the need for acid effectiveness evaluation for determining Formation specific optimum acid recipes prior to acid work in the Niger...

... of acidizing jobs. In heterogeneous multilayer formations, acid invades higher permeability zones, leaving the other layers partially or totally unstimulated. Diverters are usually injected between different acid stages to improve stimulation coverage. DTS has been employed to evaluate the effectiveness...

... An extensive lab experimental scheme was conducted to evaluate the efficiency of Syn-A chemical as stimulation fluid for low temperature carbonate formations. This scheme consisted of two main experimental sets: first set objectives were designed to determine Syn-A: thermal stability, dissolving power, acidity...

... and Exhibition , New Orleans, LA , September 30 – October 3 . Taylor , K.C. and Nasr-El-Din , H.A. : " Coreflood Evaluation of In-Situ Gelled Acid ," paper SPE 73707 presented at the 2002 SPE international Symposium and Exhibition on Formation Damage Control , Lafayette, LA , February 20-21...

...1PETROLEUM SOCIETY CANADIAN INSTITUTE OF MINING, METALLURGY & PETROLEUM PAPER 2002-248 Evaluation of Interaction of Acid Systems and Formation Samples Improves Production Response A.S. Metcalf, C.S. DeVine BJ Services Company, USA This paper is to be presented at the Petroleum Society s Canadian...

...SPE Society of Petroleum Engineers SPE 21440 Evaluation of Closed Fracture Acidizing Performed in a Tight Limestone Formation J.P. Sizer* and A.S. Moullem, Saudi Aramco, and I.S. Abou-Sayed, * Mobil E&P Services Inc. 'SPE Members Copyright 1991, Society of Petroleum Engineers, Inc. This paper...

... Abstract The evaluation of acid returns is an important tool for optimizing future acid treatments. The physical and chemical properties of the returned fluid are indicative of the rock and fluid interactions with occur during a formation treatment. Polarized microscopy is also an important...

... and formulation drilling fluid property acid SPE Society of Petroleun Engineers of AI ME SPE 13751 An Evaluation of Acid Frac/Matrix Stimulation of a Tight Limestone Formation in Exploratory Wells in Kuwait by J.R. Singh, Kuwait Oil Co. SPE Member Copyright 1985, Society of Petroleum Engineers This paper...

... written about evaluating problems that exist in oil and gas wells completed in sandstone formations. Identifying problems in real wells which can be solved with specific products is an important part of the overall acidizing program. This paper will attempt to provide insights into identifying problems...

... suitable acid additives to minimize acid flow back problems in heavy oil fields. The impact of the acid flow back fluids with acid additives on fluid separation at surface facility conditions was also evaluated. Identifying the most suitable and effective additives to prevent the acid sludge formation...

... Abstract Carbonate reservoirs are widely spread all over Russian Land. Quite common methodology of carbonate wells productivity enhancement is reservoir stimulation with hydrochloric acid solutions (HCl). However, deteriorated reservoir properties during formation evaluation and Wireline...

... damage by acid matrix treatment in sandstone formations faces multiple challenges due to variable petrophysical and compositional properties. The S field team had carried out a formation damage study to determine the damage mechanism, evaluate the best acid treatment recipe to treat the formation damage...

... gas rate matches the simulated gas rate with skin of +12, this is to ensure correct basis of evaluation for the acid stimulation candidate and to further support earlier hypothesis of declining well production is due to the formation damage ( Figure 6 ). Further detailed analysis reveals that Well...

... factors that affect the suscess of the acidization in carbonate formation. The complete well data is very needed to ensure that the the stimulation treatment is effective. The next phase is data evaluation. The objective is to predict when the formation damage occurred by looking at the well...

... Abstract Acidizing is one of the most useful methods in the oil well stimulations. This treatment technique creates capillary wormholes in the carbonate formations to enhanced fluids flow production of a reservoir. One of the main indexes for recognizing the wormhole characterization...