Patent CA-3098814-A1 (CA)
Title: Estimation of fracture complexity
Inventor: SHETTY DINESH ANANDA
IPC: E21B43/26
Filed: 2020-11-12
Abstract: A method of determining fracture complexity may comprise receiving one or more signal inputs from a fracturing operation, calculating an observed fracture growth rate based at least partially on the one or more signal inputs, calculating a predicted fracture growth rate, determining a fracture complexity value, and applying a control technique to make adjustments a hydraulic stimulation operation based at least in part on the fracture complexity value. Also provided is a system for determining a fracture complexity for a hydraulic fracturing operation may comprise a hydraulic fracturing system, a sensor unit to receive one or more signal inputs, a calculating unit, a fracture complexity unit, and a controller unit to apply a control technique to adjust one or more hydraulic stimulation parameters on the hydraulic fracturing system. 1/5 140 138 NETWORK 136 106 10- 114 1,34 r ) 112 110 ) ( 118 it 100 __________________ I 108 I- - r 120 104 124 124 26 128 1 2 2 1 12 2 Immintwaitilitifiteminvissie 130 ______________________________________________________________ 0111410214111111 122 Nk 12 2 124 124 FIG. 1 Date Recue/Date Received 2020-11-12 2/5 104 3 - 4 126 , Ø ../// a . = 120 / = // 122 00, ./.1 /7= = 102 124 .,o=o= õ = '// 'NO :0 FIG. 2A 124 202 õ õ õ 200 L., L FIG. 28 Date Recue/Date Received 2020-11-12 3/5 3:cril A ,,,,:cr-c ~9, 3:mm:130:03300:mcacc t. St ss*V" === ..= t ... t sC)'s a % ... =N ..= ~ t .1 miss .= t_ ........ Iss = . i t. it", .=,õ = -,.. t ******** la *** ..... .1===== ......s. 4. .... 3:03:00:03, ,. t ..... Ø. -% Ø 324 -*%. rconcozr ... %. 320 t. %. ~ 17:15r N TrarCIS ISM N?k), t, ..= = \ ...... .......... vii.======= t 0% .... n- 'fir O. ...... ** 304 --x..., *t .. t ..::,..N: 31:1:31:53'a t."---- ... ..,,,..... . .... % .31155 'MI II.= .31:52c: .......... = .. = Oto %. ......... tvl ..... .0%. ..... 1 ..................... ... ... .... I t == t. . s UtA '.0 '..= ..... V= .. 114. % ..4- . ....... , i rosist:c =... irrisc t- ........... =,;,1 ... II. \ ), === ti: CZ CV: M C 1:t rEED:E= NATURAL FRACTURES WELLBORE , FIG.3 5:cril A ,:acc:c acw : : :,1::cimacc'conoccocmcc t. %.. % t ..- ......... ... ........ -1 .... .% . ...., .._ ,. =-- .. % IIIR ........... %. .......... 0 , , , ,,,, ........ \ 32\ ,:irocozE %.. %.. ~ * ',, .%-:!" t= %.. .% . '0,:," tc* \' Tx333:ctr. 410 9 ~s=, to _.,-,-r. t auf::,===-:; t ... * 402 : 'k:-,------. . "". 408 "'"--- 1,--- .. = s\ ..,,,...... N 304 sts ............ . .............. s:~,,a.-; 7 ,,,.17... ~; ........... r...... , , t :: , 404 .....% ................. ... ... via.% ., ........... t ...................... ...., .. ..41 ... AL , %lie& . .... ..... . ... -,.. ,,, ... ...=. ....... ,v. ....... "k k %., ronsacc ... ... ... .,t ...... a i,a rEnic ........... : V . . == \ ), === = % , . ....... 4.4:~, . :SS ====:: ............... rEED:E= NATURAL FRACTURES STIMULATED REGIONS WELLBORE - ...õ,_...= 0 CLUSTERS STIMULATED REGIONS ' CONTAINING PROPPED BEDS FIG.4 Date Recue/Date Received 2020-11-12 4/5 c--- 500 502- COMMENCING HYDRAULIC STIMULATION I 504Th . RECEIVING ONE OR MORE SIGNAL INPUTS I 506- . CALCULATING AN OBSERVED FRACTURE GROWTH RATE I 8 . CALCULATING A PREDICTED FRACTURE GROWTH RATE I 510Th . ESTIMATING FRACTURE COMPLEXITY I 512- . APPLYING A CONTROL TECHNIQUE I FIG. 5 600 -- 608- FRACTURE COMPLEXITY UNIT r 604 OBSERVED GROWTH 606 ___________ SENOR RATE i CALCULATING I. UNIT UNIT _______________________________________________________ PREDICTED LI GROWTH RATE < m cc Lu rEcInS ig m c. r 6 10 CONTROLLER U N IT 602 __________________________________ _________________ HYDRAULIC FRACTURING _______ SYSTEM TARGET A GROWTH RATE FIG. 6 Date Recue/Date Received 2020-11-12