Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir
Imbibition is believed to be beneficial to the production. However, the load recovery is low, and water blocking can have a marked impact on the production This study aims to evaluate imbibition and water blocking behavior in tight reservoir, and reveal the impact of micro pore structure on imbibiti...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722019795 |
| _version_ | 1797901869590249472 |
|---|---|
| author | Fengpeng Lai Zhiping Li Wei Guo Ya Meng |
| author_facet | Fengpeng Lai Zhiping Li Wei Guo Ya Meng |
| author_sort | Fengpeng Lai |
| collection | DOAJ |
| description | Imbibition is believed to be beneficial to the production. However, the load recovery is low, and water blocking can have a marked impact on the production This study aims to evaluate imbibition and water blocking behavior in tight reservoir, and reveal the impact of micro pore structure on imbibition and water blocking. Low-pressure nitrogen gas adsorption (LP-N2GA), high-pressure mercury injection (HPMI), rate-controlled mercury injection, nuclear magnetic resonance (NMR), imbibition experiments and centrifugal experiments were comprehensive used. Micro pore structural characteristics and the distribution of fracturing fluid in pores were examined. The fluid can enter the small mesopores first or the mesopores first. Imbibition recovery (IR) range is 35.82% to 94.17%, and average is 63.63%. After centrifugation, irreducible water saturation (Swir) range is 3.43% to 57.84%, with an average of 17.28%. Permeability damage rate range is 15.19% to 97.86%, with an average rate of 51.88%. Factors that affecting IR include average pore throat ratio (APTR), specific surface area (SSA), permeability, porosity, pore volume (PV), average throat radius (ATR) and average pore radius (APR). Factors affecting water blocking include permeability, APR, ATR, porosity, PV, APTR and SSA. Permeability has the maximum impact on fluid distribution and flow, followed by APTR, porosity, and APR. |
| first_indexed | 2024-04-10T09:08:46Z |
| format | Article |
| id | doaj.art-6758e0fecff1492f9bea0d109c59c78b |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:08:46Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-6758e0fecff1492f9bea0d109c59c78b2023-02-21T05:14:04ZengElsevierEnergy Reports2352-48472022-11-0181383713847Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoirFengpeng Lai0Zhiping Li1Wei Guo2Ya Meng3School of Energy Resources, China University of Geosciences, Beijing 100083, China; Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, China; Correspondence to: Petroleum Engineering, China University of Geosciences, Beijing, China.School of Energy Resources, China University of Geosciences, Beijing 100083, China; Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, ChinaGeology Research Institute of GWDC, PetroChina, Panjing 124010, ChinaSchool of Energy Resources, China University of Geosciences, Beijing 100083, China; Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, ChinaImbibition is believed to be beneficial to the production. However, the load recovery is low, and water blocking can have a marked impact on the production This study aims to evaluate imbibition and water blocking behavior in tight reservoir, and reveal the impact of micro pore structure on imbibition and water blocking. Low-pressure nitrogen gas adsorption (LP-N2GA), high-pressure mercury injection (HPMI), rate-controlled mercury injection, nuclear magnetic resonance (NMR), imbibition experiments and centrifugal experiments were comprehensive used. Micro pore structural characteristics and the distribution of fracturing fluid in pores were examined. The fluid can enter the small mesopores first or the mesopores first. Imbibition recovery (IR) range is 35.82% to 94.17%, and average is 63.63%. After centrifugation, irreducible water saturation (Swir) range is 3.43% to 57.84%, with an average of 17.28%. Permeability damage rate range is 15.19% to 97.86%, with an average rate of 51.88%. Factors that affecting IR include average pore throat ratio (APTR), specific surface area (SSA), permeability, porosity, pore volume (PV), average throat radius (ATR) and average pore radius (APR). Factors affecting water blocking include permeability, APR, ATR, porosity, PV, APTR and SSA. Permeability has the maximum impact on fluid distribution and flow, followed by APTR, porosity, and APR.http://www.sciencedirect.com/science/article/pii/S2352484722019795Tight reservoirWater blockingImbibitionPore structureFluid distribution |
| spellingShingle | Fengpeng Lai Zhiping Li Wei Guo Ya Meng Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir Energy Reports Tight reservoir Water blocking Imbibition Pore structure Fluid distribution |
| title | Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir |
| title_full | Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir |
| title_fullStr | Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir |
| title_full_unstemmed | Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir |
| title_short | Evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir |
| title_sort | evaluation of fracturing fluid imbibition and water blocking behavior in unconventional reservoir |
| topic | Tight reservoir Water blocking Imbibition Pore structure Fluid distribution |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722019795 |
| work_keys_str_mv | AT fengpenglai evaluationoffracturingfluidimbibitionandwaterblockingbehaviorinunconventionalreservoir AT zhipingli evaluationoffracturingfluidimbibitionandwaterblockingbehaviorinunconventionalreservoir AT weiguo evaluationoffracturingfluidimbibitionandwaterblockingbehaviorinunconventionalreservoir AT yameng evaluationoffracturingfluidimbibitionandwaterblockingbehaviorinunconventionalreservoir |