Reservoir Formation Damage Episode 2 Part 4 doc

... 1970). 326 Reservoir Formation Damage migration, and redeposition of fine mineral particles and therefore cause formation damage (Chang and Civan, 1991, 19 92, 1997). Formation damage ... Chatelier principle. Because H 2 O 46 44 42 ~ 40 Q 01 3 38 O V) < ;2 s 20 0«F C) DISSOLVED CALCIUM, MMOLE/B Figure 13-1. Natural and induced scale damag...

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... = 0.1136 cm- 3 , R 2 = 0.8713 ( 12- 84) C = 0.0034cm 4 /min, D = 0.0076cm, R 2 = 0. 949 ( 12- 85) A = 0. 022 9 cnT 2 , B = 0.0003 cm/min, R 2 = 0.9873 ( 12- 86) The coefficients ... 12- 92 to 12- 96 into Eqs. 12- 87 to 12- 90 leads to the following volumetric balance equations, respectively (Civan, 1999b): dt ( 12- 97) dt e p2s ] = 2r c N° p2s ( 12- 9...

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... flux in the plugging pathways is given by: =u- ( 14- 43) ( 14- 44) ( 14- 45) ( 14- 46) ( 14- 47) ( 14- 48) 41 6 Reservoir Formation Damage Well Reservoir radial drainage area •w Enlarged section ... Messaoud id. id. id. Petrophy 0% 13.1 13.6 13.7 8 24 .7 24 .3 26 22 .6 22 .6 23 7.1 sical data K H (mD) 107 87 77 .4 6 29 12. 2 73 15 .2 1.1 2 0.67 Injection rat...

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... porosities: (2- 25) (2- 26) subject to Integrating Eqs. 2- 25 and 26 yields: In (2- 27) from which the porosity variation by swelling can be expressed by: 50 Reservoir Formation Damage Fabric ... Figures 2- 22 and 2- 23 show the correlation of their data with Eq. 2- 22 using Eq. 2- 6. The best matches of the data Mineralogy and Mineral Sensitiv...

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... Petrol. Geol., Vol. 36 (2) , 19 52, pp. 25 3 -27 7. 62 Reservoir Formation Damage and the surface area and surface area based diameter, d A , are given, respectively, by: 1 /2 (3-30) Note that ... pp. 27 9 -29 2. Davies, D. K., "Image Analysis of Reservoir Pore Systems: State of the Art in Solving Problems Related to Reservoir Quality, SPE 1 940...

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... anions such as Cl~, HCOj, CO; 2 , SC> ;4 2 and the cations such as K + , NA + , Ca +2 , Ba +2 , Mg +2 ; (2) mole- cules such as CH 4 ,CO 2 ,H 2 S, N 2 , molasses, polymers, surfactants, ... Processes 120 Reservoir Formation Damage CP2-CONTROL CP3 - NIPER BAG -1 LOG -— = 0739 20 30 40 50 70 20 30 40 50 60 70 20 30 40 60 60 Swi,...

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... Damage dR Ml = •A\ _ (8 -43 ) p _ *^M 12 _ T, poA _ T, pP^ ^ 12 ./^ , x^^Al^Al / M2 y M 12 (8 -44 ) \ -* A2 _ . 4 — " 4 9 **• 4 1 "7 (8 -45 ) ?i A1 and A- A2 are some rate ... that (9-15) V = -nr 3 3 A cw = 47 1 r 2 (9-16) Eq. 9- 14 can be written as AG (r) = - 7cr 3 (AG v + e) + 4jcr 2 a c (9-17) 1 62 Reservoir Formation...

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... condition Then, solving Eqs. 10 -20 and 21 yields: (10 -20 ) (10 -21 ) (10 -22 ) k c is the pore filling particles resistance rate constant. Single-Phase Formation Damage by Fines Migration and ... area covered by the particle deposits, A , as ty = A f /A (10 -25 ) $ 0 =A fo /A (10 -26 ) e p =A p /A (10 -27 ) Substituting Eqs. 10 -25 through 10 -27 , Eqs. 10 -23...

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... SPE Paper No. 1 623 5, Proceedings of the 23 4 Reservoir Formation Damage 80 ~ M E a. E 40 0 .29 100 20 0 300 40 0 500 600 700 PORE VOLUMES 800 900 1000 1100 Figure 10 -28 . Effect of fluid ... Formation Damage in Petroleum Reservoirs," SPE 19 42 0 paper, Proceedings of the 1990 SPE Symposium on Formation Damage Control, Lafayette, Louisiana...

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... 12- 2, 12- 9, 12- 46 , and 12- 48 into Eq. 12- 45 results in (1999a) dt r w -8 ' where ( 12- 49 ) ^yp^ ( 12 ~ 50) and B is given by Eq. 12- 13. The initial condition for Eq. 12- 49 ... Modeling 27 1 K c L f )aK f ( 12- 22) aK ( 12- 23) Alternatively, eliminating (p c -p e ] between Eqs. 12- 18 and 12- 19 and then solving for 8 yields: aK t 5 = i-...

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