- dp = 1 2 Θdv 2 + dp l (1)

Transcript

1 () Journa of X i an Petro eum Institute (N atura Science Edition) : (00) M ar. 00 V o. 7 N o. A New Ca cua tion M ethod of the Pressure D rop Around the W ebore of a Gravepacked Perfora ted W e,,, (, 5706;., 5706) : 3,,. Bernou i. Fo rchheim er. :, ;, 5mm, 30 gm, 3040Λm. : ; ; ; ; : T E57 + 3: A,,,,.,,,. 3 ().,,,,. Bernou i [ ]., [3 ] [4 ], [5 ]. Y idiz T. anginais J. P. [5 ],,.,, Fo rchheim er., Bernou i : = Θdv + () : p p w = Θ[v v ] + p () : :, (976),,,,.

2 34 () : M Pa; Θdv M P a; M Pa; p,m Pa; p w M Pa; Θ, kggm 3 ; v r =,m gs; v,m gs; p, Pa. p, r v = Fo rchheim er Πrh dr = Λ k v + ΒΘv (3) r = r (p = p ) r = (p = p w ) : Λ r p p w = n ΒΘ (4) Πk fh Πh r : Λ, Pa g s; k f, m ; h,m; r,m ;,m ; Β,m. (), (4) p Θ(v v ) u r n Πk fh = ΒΘ Πh Θ(v v ) r (5) vp, r Θ[vp, p Θ(v v ) = v ]. Θ(v v ) (6) (5), (6) p p = vp v v v Λ r n Πk fh ΒΘ Πh Θ(vp v ) (7), Bernou i p p p = Θ[vp v ] + p (8) (7) (8) r p = n r Λ Πk fh ΒΘk f ΛΠh v p v v v r (9) [5 ], 30, r = 30. : vp = (0) ΠhΘp [ p ( rci ] : Θp,m ;, m ; p,m; rci,m ; p,m Pa.,.,,,,,, ( ),.,,. hθpπrz = Πrsoh () rz = rso Θp :,m ; rso,m. () A,, r,

3 : 35 r = + (rz ) (3) A p p =, v = (4) hθp Π + (rz ) (4) Fo rchheim er d = Πk + rz ΒgΘp Π + + rz r, dr = rz Πk 4 (5) r + ΒgΘp (6) Π r 4 (9) r = rz, P = Πk g rz rz + ΒgΘp 3Π 3 rz 3 (7) : Λ, Pa g s; k g,m ; Βg,m ; p,m Pa. 3, [4 ] : P 3 = Πk g + 3 ΒgΘp Π 4 p (8) () Y idiz T anginais J P [5 ],. gm Pa gmm Yidiz : 40m 3 gd, m Pa s, 870kggm 3, 3m, 3 gm, 0, mm, 0. 6mm, 40Λm., Y idiz T anginais J P ; Y idiz 8,.,, ;,, Y idiz. () ; 3, 4, 5, M Pa,. 8M Pa, M Pa. :. 4m,. 4Λm, 90, 0 gm, 0. 88, 5m Pa s, 5Λm, 30tgd. gmm g( m ) gm Pa ( 0 gm ) 4 ( 4mm ),, ;

4 36 (),,,. 3040Λm,, 30 40Λm,.,,, 3040Λm,. 4 5 ( 0 gm ) 6 ( 4mm ),,., 3 4 5mm 30 gm,,.,,, 5mm 30 g m. 3 4,,. () Bernou i Fo rchheim er,,. (),. 7000mm Y idiz,,. (3),.,,, 5mm, 30 gm. ( 4) 3040Λm,,,, 3040Λm. : [ ],. ( ) [M ]. :, 99. [ ] O konkw o F C, O nyekonw u M O. N ew p seudosk in m ode fo r fow convergence to perfo ration in com pe tent fo rm ations[j ]. JPSE 997, (7): 78. [3 ]H arun A tes, Kekar M G. Tw ophase p ressure drop p redictions acro ss grave pack [J ]. SPE375, 997. [ 4 ] O yeneyin M B. Op tim um grave sizing fo r effective sand contro [J ]. SPE 480, 99. [ 5 ]Y idiz T, anginais J P. P ressure o sses acro ss grave pack s[j ]. Journa of Petro eum Science and Engineer ing, 99, (6): 0. :

5 g m easu res of p rofie con tro is taken, the increase of o i recovery efficiency is ess than that w hen p rofie con tro is carried ou t earier. Key words: p rofie con tro ; w ater shu toff agen t; crude o i; recovery efficiency I K ehua, ZH A O F uin, J IA O Cu i, et a (D epartm en t of Chem ica Engineeing, J ianghan Petro eum In stitu te, J ingzhou 4340, H ubei, Ch ina) JXA P I 00 V. 7 N. p. 303 A New Ca cua tion M ethod of the Pressure D rop Around the W ebore of a Gravepacked Perfora tedw e Abstract: T he p ressu re drop around the ho e of a gravepacked perfo rated w e takes p ace in fo ow ing th ree areas: the convergen t fow area from near w e zone to a perfo ration channe, the inear fow area in side a perfo ration channe, and the divergen t fow area betw een casing and screen tube. In th is paper, the new mode of cacu ating the p ressu re drop in the convergen t fow area is derived on the basis of Bernou i euation, and the simp ified fo rm u a of cacu ating the p ressu re drop in the divergen t fow area is aso p resen ted based on Fo rchheim er euation. T he resu ts of severa cases show that the m ain part of the p ressu re drop takes p ace in the convergen t fow area and the inear fow area, and the p ressu re drop in the divergen t fow area is very itte. T he resu ts aso show that perfo rating param eters and the perm eab iity of packed grave are the key facto rs of affecting the p ressu re drop. T he diam eter of perfo ration channes had better be mo re than 5mm, and perfo ration den sity shou d be above 30 ho es per m eter. Fo r h igh p roduc tivity, the perm eab iity of packed grave shou d be 3040 D arcy at easṫ Key words: sand con tro ; grave pack; perfo ration channe; p ressu re drop; cacu ation mode DON G Chang y in, ZH A N G Q i, I Z h if en, et a (Schoo of Petro eum Engineering, T he U n iversity of Petro eum, Dongying 5706, Shandong, Ch ina) JXA P I 00 V. 7 N. p Com puta tion of the Opera tion Abiity of Co ied Tubing Abstract: T he stiffness of co ied tub ing (CT ) is poo r. W hen it bears ongitudina comp ressive oad, co ied tub ing is easy to bend in to sine cu rve o r heica cu rve, w h ich is caed as destab iization. T he desta b iizing condition s of co ied tub ing are discu ssed. T he m echan ica mode of the co ied tub ing in the ho e of arb itray track is estab ished, and its boundary condition s in tripou t and tripin operation s are p resen ted. A cco rding to these, it can be determ ined w hether the co ied tub ing can reach to the expected po sition in w ebo re and exert the fo rce designed fo r comp eting the desired w o rk, and the m agn itude and direction of the fo rces bo rne by the co ied tub ing are aso cacu ated to determ ine w hether its w eservice operation is safe. If the fo rces designed fo r the operation can no t be ob tained on y by the w eigh t of the co ied tub ing, a pow er pusher and a pump are reu ired in o rder to supp y h igh p ressu re iu id in to CT. T he num erica so u tion in th is case can be ob tained by iteration m ethod. Tw o examp es are given in the tw o cases, and the cacu ated resu ts are iden tica w ith the m easu red ones. Key words: co ied tub ing; bending; destab iization; operation ab iity H E D ong sheng, W U X uey ao, E I J ianan (D epartm en t of M echan ics, D aian U n iversity of T ech no ogy, D aian 603, iaon ing, Ch ina) JXA P I 00 V. 7 N. p D iagnosis of thew ork ing Sta te of a Hydrauic Jet Pum p Production System and Adjustm en t of Its Param e ters Abstract: In o rder to m ake a jet pump p roduction system w o rk under op tim a condition s and to in crease the efficiency of the system, a m ethod is put fo ard of cacu ating the w o rk ing param eters of the jet pump acco rding to the data m easu red in su rface. T he param eters incude the p ressu re ratio, fow rate ratio and efficiency. Based on the param eters, the w o rk ing state of the jet pump p roduction system can be deduced, and the fau ts of it can be diagno sed. T he in et p ressu re of the jet pump can aso be ob tained by the p ressu re ratio, and it can be u sed fo r acu iring the p roductivity cu rve of an o i w e. T he fau t diagno sis of the jet pump p roduction system is carried ou t by th is m ethod w ithou t the term ination of pump ing and the dow nho e m easu rem en t of data. Tw o examp es show that the m ethod is feasib e and effective. Key words: jet pump; o i w e; diagno sis of w o rk ing state; jet nozze; vertica p ipeine fow W A N G H a iw en, T IA N Z hong iang, W U Guobin, et a (Schoo of Petro eum Engineering, T he U n iversity of Petro eum, Dongying 5706, Shandong, Ch ina) JXA P I 00 V. 7 N. p. 443