Oil-Water Biphasic Metal-Organic Supramolecular Gel for Lost Circulation Control: Formulation Optimization, Gelation Mechanism, and Plugging Performance
Qingwang Li, Songlei Li, Ye Zhang, Chaogang Chen, Xiaochuan Wu, Menglai Li, Shubiao Pan, Junfei Peng
TL;DR
A new oil-water gel system is developed to control lost circulation in oil drilling by forming a strong, heat-resistant seal.
Contribution
A dual-precursor oil–water biphasic metal–organic supramolecular gel is optimized for in situ sealing in oil-based drilling fluids.
Findings
Optimized formulation includes a 10:3 oil-to-aqueous ratio with specific additives for effective gelation.
MOSG gelation is enhanced by elevated temperatures and mildly alkaline conditions promoting P–O–Al coordination.
The gel shows high viscoelasticity, thermal resistance up to ~193 °C, and effective sealing in simulated fractures.
Abstract
Lost circulation in oil-based drilling fluids (OBDFs) remains difficult to mitigate because particulate lost circulation materials depend on bridging/packing and gel systems for aqueous media often lack OBDF compatibility and controllable in situ sealing. A dual-precursor oil–water biphasic metal–organic supramolecular gel enables rapid in situ sealing in OBDF loss zones. The optimized formulation uses an oil-phase to aqueous gelling-solution volume ratio of 10:3, with 2.0 wt% Span 85, 12.5 wt% TXP-4, and 5.0 wt% NaAlO2. Apparent-viscosity measurements and ATR–FTIR analysis were used to evaluate the effects of temperature, time, pH, and shear on MOSG gelation. Furthermore, the structural characteristics and performances of MOSGs were systematically investigated by combining microstructural characterization, thermogravimetric analysis, rheological tests, simulated fracture-plugging…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsDrilling and Well Engineering · Enhanced Oil Recovery Techniques · Hydraulic Fracturing and Reservoir Analysis