Show I 1 7 1 A A pt M 7 1 A 44 J 4 i V 14 L x i 0 t o ff A ft I 1 all I 1 5 t j f y T arf 4 NW item W I 1 1 i V 1 0 f owna aka ioset won 4 4 y 6 11 1 Mthr tir 1 W y r h P wall w r X j y V tg wow I 1 e arh 0 j j i H AJ IA 0 4 0 A 11 11 4 k 1 V 1 J k lor diagram shows details of the lh big flood program that is planned for gangly nan gly gely colorado oil field the california company ope operators of the lh unit will tart start water injection in april to supplement the pre ent gas drive ran 9 rely oil field eyes bi big 9 r F lod flood under secondary recovery plan calco will start water inmei anjel tion in april to supplement present gas drive gwo phase program may jump ultimate recovery to bbl abbl rangely langely will be in the same class as is oklahoma city field and west texas iceley snyder field once the secondary re covery program planned for 0 o the field gets into full swing reserves underlying range ly IY have been estimated at about 1 abbi bbl tile the flood together with tile gas injection program already in operation is expects to arii bring 19 up lip 50 of tile the oil in place hiis is more than twice the cati mated bbl abbl re lc coverable through primary means from 1932 to 1850 1050 rangely langely had nearly bbl abbl of primary oil looking nt at it another way new oil expected from froin range ly Is equal to all the oil pro pre ducep in the three states of montana nebraska and north dakota up to 1058 ahe acre nere It angely unit one of tile the nations nation fi largest was approved last hist year after to years of work by the colorado oil and gas censer conservation commission and oper titers to curb gas flaring aug 20 1957 1937 p 70 gas gaa injection was carried out even before unitization dul unitization operation has model made possible a more efficient program flaring lias has nell reduced from about M C I 1 dally daily to the present 5 M C I 1 dally daily flood plans first phase ot of tile the held field wide flood will in it volve only tile the north arid and east cast flanks of the field construction lies has begun on oil a pump station which will have initial capacity of bbl abbl dally daily but it s de dc signed for po albio calbie expansion to bill dally daily by add ing mote mare pumps and engines rite flie program la Is based on oil results of three pilot floods or on the north east and southwest edg edges s of 01 tile the held field but only two pilot areas are involved in the art first phase of the expanded flood the california co unit operator said tl if e north fl d will be peripheral and tile the five spot pattern will be used for the east flank where sand Is tighter each eacle of these areas will have 10 injection wells initially both areas will b be connected conneL ted by 12 inch lines from the central pump station engineering for the plant will be completed by proctor engineering co aulsa in it about a week dill calco lias has already started foundation four dation work to get a head start on the lold cold weather major contract for construct construction iori will probably be later this donth plans call all for two abbi bbl quin duplex pumps directly con necked to two lip hp na natural gas engines engine and one bbl abbl lOOps asig lg centrifugal booster pump with gas driven engine water treating and fit bering facilities could he be add ed if and when needed wa ter will come from the en and navajo formations pilot floods calco began the pilot projects shortly alter after unitization about bbl abbl ot of water have been inject ed injected wells were deepened def veua to expose as much of tile the weber san sana as is exposed producers Up structure the weber Is in found at an average of about ft completion involved running tubing and packer arid and setting getting packer near 7 in cos cas continued on page 12 langely rangely field continued from page 9 ing shoe water injection is down tubing injection rates and profiles were measured by spinner arid and temperature surveys and one radio radioactive active survey calco feels that the temperature surveys are the best for future studies gas program about 40 wells walls with GOR in excess of 6 1 have ben been shut in since unitization however average GOR GOH has increased from 2510 to 2 the past 3 ear gas handling has been in creased from 96 M met c f daily to N M c f by mod handling equipment quip ment better use of compressors while injection has been in creased number of gas injection wells was reduced from 19 to 17 the program is amov ing from dispersed to crestal type injection in near fu u ture the program will involve eight crestal wells and six dis persed wells the unit there ore are cur rentie wells producing from the weber in the unit of these are pumping production now averages about 53 bbl abbl daily defore before unitization production was about 70 abbi bbl daily the lite unit has 45 operating interests calco which discovered tire the field in 1932 has 45 interest in the field oth er cr chief interest owners in elude union pacific railroad pan Am american ambric petroleum corp phillips petroleum co equity oil co and utah southern oil co at the time lime of unitization warwick M downing commission chairman sold said that oil ft in place in Ha langely rangely at at time of discovery was estimated at n from 1 billion to 2 billion barrels operators believe the secondary recovery program will lengthen the fields life to 31 or 40 more years yeara oil and gai journal |