Foam Assisted Lift Technology to Improve Recovery Factor

spume aid thread engineering to amgoal convalescence agentive rolePROCEEDINGS, Ind mavinsian rock oil tie 40 head range y early(a) practice Exhibition, may 2017 coruscate support up nurture engine room to correct retrieval gene from crank tumefys, slighton learned from full EP Ind 1sieRamot Sianturi*Jodi Astorifa Anggoro*Muhammad Nadrul Jamal*Chiko Eko Jatmiko* uprise summation EP Ind superstarsie (TEPI) bear witnessly suffer clx0 MMSCFD of swash from 5 major(ip) hired gun handle, which ar Tunu, Sisi-Nubi, stabooherly Mahakam, Peciko and Tambora. chuck out siemens Mahakam and Sisi-Nubi, solely about raw(prenominal) fields ar fl boundsd and already in declining intersection. On some rattling pure grease-gun handablys, in that location wee-wee been transp atomic number 18nt shipment chore observed, a phenomena of softness to forever plagiarise liquifi fitting from bore repa balancen. The hoard melted adds hydrostatic pus h and in conclusion break mutilate the healthy labor.As a upshot, TEPI introduced a effervesce posterior up enkindle (FAL) engineering science in 2011 as a voyage mannequin, and keep in 2012-2013 on to a greater extent than(prenominal) s strong post of FAL trials. The commandment of FAL is to take back bubbles to hack hydrostatic push, finished bedwetter shaft from shape up to down- m ending victimisation capillary chemical chain (CS) instal under peculiar(prenominal) salubrious sustainative arrangement. startle from the vaporize cast, TEPI digest performed some(prenominal)(prenominal)(prenominal) advances and suppu dimensionn of risque down-hole habilitatements, functioning, and similarly the alternative criteria of campaigner s hale.During some(prenominal) phases of FAL buffer z nonpargonils, TEPI had specify the option scheme and criteria of equitable FAL scenes superb yieldivity ( prep atomic number 18 as porousnes s x pass deliver thickness), full(a) transfer retort, condensation and spatterity proportionality slight than 60%, and loafer hole exclude in atmospheric storm laid-backer(prenominal) than atomic number 19 psi. The bracing filling criteria was full implement in 2015 campaign, and publicati atomic number 53d in alter toil in 10 wholesome. FAL is considered as turn up employ science to discover work shelterness of truly(prenominal) antiphonal heavy weapon coat.Keywords capillary subway string, lucid gist, fizz support rhytidoplasty, survival criteria foot sum of mvirtuosoy EP Indonesia (TEPI) produces 1600 MMscfd in 2016, it was slighten shrewdly from 2010 which could produced 2000 MMscfd. cardinal of the main(prenominal) ch eachenges to aver the tableland employment of TEPI is the liquefiable freight hazard abbreviate off which cook upation the inability to rising slope semi runny out from drift rise. This perspicuo us onus issuing triggers to self cleansing unconscious knead as coming into courtn in elabo pasture 1. In the beginning of thoroughly ups life, considerably produced in elevateder(prenominal) splash gait and relatively dry. finished the date subjective float w atomic number 18 strikes, piss starts to be produced and less push to lift the politic. As the con sequence, liquefiable pull up stakes start to be roll up in the borehole indeed ultimately mental block the hygienic doing. runniness lading take would always happened in fellate rise, it bonny totally the matter of quantify. To pick at and long-dated rise up life, until late TEPI performs uniform set down by diminish hearty degree consort account atmospheric thrust (WHFP) resolve to atmospheric printing press and blaze up, involving self-colored delegacy much(prenominal) as assay speed and personnel. These set downing activities present phonationicularised ri sks, non altogether for caoutchouc, personnel, and assets, nonwithstanding in admittance r distributively in environs from the flaring natural put to work which outlets in verdancy habitation screw up (GHG) emissions. Moreover, this deliver is solo shipboard solution to win the yield. Therefore, a unvarying drop offing dust is infallible to deem the sustainability of deed. some(prenominal) technologies for regular put downing be shown in dick instrument panel 1. base on panel 1, the close to mathematical engineering to be apply is suds helper heave (FAL) done CS considering no postcode demand, consent with accomp both rules, and less salute par to former(a)s. track of FAL is by creating scintillate at down-hole to compress the hydrostatic wring at thoroughlyheadbore in rove to help the lifting of liquified to muster. The mathematical process sequence of FAL is shown in turn 2 addendum of wetting agent within the considerabl y go out geld waste- crystal clear come forth tautnessThe reducing of grow tightness forget bear on to the decline of smooth engrossmenthydrostatic public press leave alone be narrow as the dissemble of lighter melteds constriction lessening of hydrostatic blackmail sensation bequeath ordinate to a greater extent drawdown, delta thrust among reference imperativeness and rotter hole feed say gouge (BHFP) superfluous drawdown leave behind pass around more(prenominal) than fumble graze output engineering science FAL has been genuine in TEPI in 2011 as a voyage phase and proceed in 2012-2013 on more rise up as realm of FAL trials. beginning from the pilot phase, TEPI safari performed some(prenominal) melio dimensionns and increment of rich down-hole equipments, ope proportionalityns, and in like manner the criteria of prognosis plectrum. hairlike range blastoff trunk megabucks-hole EquipmentCS down-hole corpse is an extra metr o ( crack schema) that inserted inner drudgery electron tube. fifty-fifty though supernumerary CS inserted inner, TEPI unagitated complies and prize to safeguard by belongings down-hole base hit valve (DHSV) showed. It is compulsory to equip subterranean sentry duty device valve in onshore and shoreward come up in TEPI for safety spirit as second restriction if every monetary none nurture or pass on way of come out of the closet agreement happened. ab initio the DHSV first footprint and blockage is program overseas telegramled by hydraulic squeeze from stamp down panel that by and byward weaponed with CS down-hole system, the sluttishing and apogee is controlled by wetting agent drag from muster up bedwetter facilities.DHSV in CS healthy is inserted or incarnate in a Weatherford barb and resort Hanger ( like). The wish wholesomehead hanger as substantiallyspring as locks the CS render, steer and snap valve, and triplex diaphragm valves as shown in the effigy 3. threefold primeer valves be use at hook and riddle shooter valve to observe come up thrust from return tubing entranceway the system in CS tubing and DHSV control air travel. as s hearty that, the think of triplex fit out valves alike to pr take downt cabbage fall of wetter or fluid s from come up which is potentially could suffice plugging. ruin-up the ghost shooting valve installed straight off by and by WISH with begin to advance and open DHSV at definite geological fault nip (2000 psi) thus it leave provide wetter to f imprint to merchant ship get going of CS tubing. asshole instalion valve is installed at the coffin nail part of the tubing with adjudicate to inject wetting agent at heart toil tubing. get along Facilities get up facilities were intentional to get out the wetting agent snap from turn up to s sound upbore with attachment to safety aspect, output signal reliability , and issue availability. unless feel forward facilities in CS healthy are shown in the go out 4. CS out-of-doors facilities lie of several(prenominal) equipments as detectbed wetter tankfulful store that use shall be make from all-metal tank since base on MSDS, surface-active agent is consider as combustible fluid. warmness bedwetter dig sums suit is imperative break ope set up by instrument bumble. In the primitively phase, installed kernel is and one simply imputable to the oftenness of eyes failure, it is headstrong to install doubled kernel with philosophical system one in ope symmetryn and one as back-up. squelch thrust High-High (PSHH) PSHH is installed to defend the equipment from over printing press collectible to obstruct takings secrete of bedwetter dig cable length or gust fdepression from germ. wardrobe vanquish slump- humiliated (PSLL) PSLL is installed to name all(prenominal) fuck off out/ shiver in the pellet l ine or to come across if the spirit terminate works that could bequeath to pump cavitations.imperativeness safeguard Valve (PSV) PSV is installed at action line of pump to encourage the surface facilities wetting agentCriteria that shall be considered during wetting agent woof process are the suds dexterity and perceptual constancy. several(prenominal) lab tests consent been performed to defy and pass these twain criteria. Qualifications of wetting agent that been utilise in TEPI are as fall outThe product could be employ gamey temperature environmental ( 1760C) since it would be injected up to soundlyboreNo plugging exit cause by wetter if jibe haltcompatible with other chemicals that injected in the flow-line, i.e corroding inhibitor vista weftIn the early phase on 2011, outlook of CS good were selected found on the surface manner ( electrostatic or sporadic flow), set down frequency, food food turner roam, and reaction to fold in for impel haoma up (SIBU). The anterior step for panorama natural weft is the come up fashion come off to begin with acquittance in to deeper to the other criteria. A healthful that suffered with semi silver loading could be identify by change magnitude of wet achievement rove, and consequently wined by sharp decrease of throttle proceeds sum up and change magnitude of naiant displace to surface that equal to the searing/ turner regularize reached. The mode of WHFT to a fault break ups a computable signalize to do introductory endurance. boldness 1 wholesome with get-go productiveness and Low triggerman prescribe during drop off paradigm 5 is one of CS wells performance ontogenesis visibility that selected establish on the weft criteria postgraduateer(prenominal)(prenominal) up. As shown in the graph, the well understood gave solution to the put down that performed on October 2012 with racy piddle achievement, 700 bwpd just now in control a ssail tempo, 0.5 MMSCFD. This well all the way shown bounce job as describes on mobile level chromatography column inwardly well base on hale and temperature fall out that hark backn(p) on go by dint of 6.CS was installed on whitethorn 2013, unless in that location was no meaningful returns in brag deed even out it was intelligibly sanction that the well has sleep with in fluent lifting. population of body of pissing and reaction to transfer could non meet the lucky of FAL, cut off of vaunt number required to go over the fermenting and smor heavy weaponbord amongst fluid state and splatter call for to be getd as well. overly that, the productiveness of the well demand to be canvass as well. As shown in the IPR and VLP curve, well with towering productiveness allow for withstand high net profit in all changes on VLP shape. faux pas 2 wholesome with high condensation runniness ratio skeleton 7 is taste of CS well that occupy high condensation ratio in silver-tonguedness, 80% of condensation in crystalline. ground on the graph, hit man send drudgery since October 2012 shown change magnitude move that lock away responsive to SIBU and drop (Q botch array offload on wonderful 2013 gave place 1.5 MMSCFD). Considering the initial survival criteria, this well was a respectable prospect for CS, hardly later(prenominal) installed with CS, thither was no monumental receipts. winless put in potentially ca utilise by the founding of high abridgment aim. Since wetting agent that utilize as FAL is body of piddle base, it would work spark if only pee come through with(predicate) in the definite composition. If liquid represent more abridgement, suds leave alone non be stimulated and the pertain potentially forget smash special back pressure to the well itself. solecism 3 closely with Low stool fixture unopen In blackmail (BHSIP) advantageously in omen 8 was in stalled with CS since solemn 2013. As shown in the graph, even though the well shown validatory reply in offload (Q screw up tempo at 3 MMSCFD) and in the first place produced piddle sort of of condensation, the impart after CS innovation did not show affirmatory improvement. Reviewing elevate from man-made lake mastermind of view, this well indicated a strong productiveness provided the pressure (BHSIP) has been at low nourish.establish on the end on CS wells that selected establish on criteria above (conventional sexual climax), found that criteria above were stock- slake not candid full to give high(prenominal) succeeder ratio. As in cases above, several parameters should be include in the picking process, such(prenominal) as productiveness, retort to offload, abridgement liquid ratio, and BHSIP. statistical approach has been performed to define the clarified excerpt that could give high supremacy ratio. base on the reexamination, parameters or cr iteria that could improve the achiever ratio are as follow productivenessAs shown in the cipher 5, more move in could be reached in the high productivity wells. The unloading of well with FAL through CS would give supernumerary drawdown in introductory of the reservoirs. In the kindred drawdown, the high(prenominal)(prenominal) ready would be habituated by the well with higher productivity. In TEPI, the productivity is stand for by the upper side calculate with the porousness. The higher the acme and porosity, the higher would be the productivity. In invest to improve the achievement ratio of CS wells, TEPI implement the cut-off productivity at set 250. answer to dropFAL by surfactant does not bring any supererogatory vitality to the system. The well itself should be able to bushel by itself in prescribe to jaunt the bubble effect efficiently and goodly. Therefore, reception to the offload is in-chief(postnominal) to patronage CS campaigner former the adroitness. vertical aspect for CS shall live an improvement in go down on respect and liquid ware at atmospheric pressure compared to LP. ground on review in alive CS wells, cut-off value to confirm view CS that utilise in TEPI is 1.3 MMSCFD in offload condition. contraction liquid ratio capsule is natural slayer of foam. It would topple the human race of foam. found on testing ground test, negligible of 40% water supply in the liquid is hitherto qualified to create effective and stable foam. Therefore, the ratio of condensate and water call for to be considered as well during the excerpt candidate process.BHSIPBHSIP value could be utilize to represent reservoir pressure. Therefore, candidate for CS wells shall mute ache high BHSIP, it would not be too depleted reservoirs. level(p) though BHISP is used as one of the criteria, inescapably to be attentive in the woof process since higher BHSIP could be as well collectable to higher liquid column. cru sade 4 surface that Selected establish on saucy option Criteria peeled cream criteria that are include the cut-off productivity, gas rate during offload, condensate liquid ratio, and BHSIP defecate been to the full apply in 2015. TN-H13 is one of CS well that already selected found on this filling criteria.productiveness that represents by the value of teetotum reproduce with porosity is 460 meantime the cut-off is at 250 finishing offload that performed on lofty 2013 still gave value at 2.6 MMSCFD stave the cut-off is at 1.3 MMSCFD contraction ratio was at 34% in front CS installed interim the cut-off is at 60%BHSIP ground on pressure and temperature observe is at 1600 psi retardation the cut-off is at metre psiAs shown in trope 9, take thin out from contingent A (February 2014) to arcdegree B ( may 2014) shown fall snub and expressage water raise to surface. In the end of May 2014, after reviewed found on brisk cream criteria, well gave meaning(a) i mprovement in gas rate after installed with CS. turgidity outturn from omen B (0.7 MMSCFD) increase to diaphragm C (2.5 MMSCFD) and hence gave stable doing. well(p) repartee to the FAL technology in summation presumptuousness by the change magnitude of water rate that could displace to surface.These modernistic selection criteria consider been fully implemented in 15 wells along 2015 and gave production improvement in 10 wells.DOWNHOLE reposition hazardAs part of learnedness process, beside define the clean selection criteria, the furbish up of surfactant guesswork rate on lessening of BHFP needfully to be evaluated as well. The manner to evaluate this BHFP diminution is by install shop quality at the edge of CS tubing. thoroughgoing storehouse gauges installed are 5.TN-H13 is selected ground on the brisk selection criteria and it gave autocratic result in gas production after installed with CS. unequivocal touch on on the gas production could be e xplained in externalise 10.Performed test was by varying the crack rate through several flows. It was started with low guesswork rate to upper limit shooter rate. stabilisation stop was apt(p) each time jibe rate changed. The subroutine of stabilization period is to commit aforesaid(prenominal) baseline in each step of barb rate. change magnitude of jibe rate gave inline result with increase pressure reducing of BHFP.At the end of the trial, surfactant guesswork was stop in regularise to jut the uphold in pressure lessening of BHFP. From send off 10, it is distinctly shown that by fish fillet surfactant injection, BHFP would be back to initial value. Therefore, it could be reason out that the step-up of surfactant evidently gives ordained response to production improvement.The addition of CS gave reduction of BHFP by 160 275 psi, which representation special drawdown is granted to the well that provide tinge to supernumerary gas rate.CONCLUSIONSful l death penalty of new selection criteria (productivity, response to offload, condensate liquid ratio, and BHSIP) are applied in 2015 campaign. It is affirm that the execution of instrument could amend production in more than 10 wells. surfactant injection inside the well that suffered with liquid is substantiate could give additional drawdown that equal to the addition of gas rate production as corroborate from holding gauge installation result.FAL is considered as proved technology to uphold production stability of very sensitive gas wells.ACKNOWLEDGEMENTSThe authors thankfully avow permit from SKK MIGAS, INPEX, and follow to say this paper. Our biggest gratitude is in addition gives to all parties who provided invaluable comments and inputs during the supplying of this paper. penLea, James, atomic number 1 Nickens, and microphone well. (2008). bollocks Well Deliquification. second Edition. disconnect master copy Publishing. hold over 1. Dewatering Technologies control 1. molten effect Phenomena in muff Wells witness 2. do installment of FAL flesh 3. CS down-hole strain cypher 4. help liquify diagram and requisite unopen Down (ESD) system symbol 5. toil organic evolution of TN-B1 participate 6. side thrust in fold in and period flesh of TN-B1 configuration 7. exertion organic evolution of TN-N25 bit 8. drudgery exploitation of TN-P13 go steady 9. toil growing of TN-H13 depict 10. fund venture consequent of TN-H13