formation fluid chamber

formation fluid production

formation fluid sampler panel

formation fluid test

Formation Sampling

Formation Sampling Tester

native formation fluid

fluid sampling

ocular fluid sampling

Member 4 of Quantou Formation -Yaojia Formation

artificial intestinal fluid and gastric fluid

Stratified sampling Objective sampling

1+X formation

“One step process” formation

1 st member of Shahejie Formation

1-2 member of Xujiahe Formation

1st member of Nenjiang Formation

Ⅰ oil formation in Xing’anling Group

2(superscript nd) member of Shanxi Formation