No abstract

The compound 2[Ca(H 2 O) 3 (DMF@CB[6])]·2(BTC)·15H 2 O (CCUT-102, CB[6] = cucurbit [6]uril; H 3 BTC = 1,3,5-benzenetricarboxylic acid) was synthesized using the approach of organic guestinduced formation of polymers or frameworks based on the coordination of metal ions and cucurbit[n]urils. The compound was characterized by X-ray diffraction analysis, PXRD, IR spectroscopy, thermogravimetric and elemental analyses. According to the X-ray diffraction 717 data, the calcium atom is coordinated by the oxygen atoms of the CB[6] molecule, water molecules, and N,N-dimethylformamide (DMF). The internal cavity of CB[6] is occupied by DMF. Each H 3 BTC molecule interacts the CB[6] molecules through π…π interactions between aromatic rings of H 3 BTC and the rings of CB [6]. The luminescence behaviors and sensing properties of CCUT-102 in different solvents were also studied.

The Lishui sag located at Southwest of the East China Sea Shelf Basin. It had undergone the four stages of syn-rift processes in Late Cretaceous to Paleocene: initial rift stage, main rift stage, stable rift stage and decline stage. The tectonic evolution has control effect on the development of sequence stratigraphy and the sediments distribution. Three second-order sequences, five third-order sequences and twelve system tracts are distinguished. Different sedimentary facies recognized in the Lishui sag.

W81 Block is located in the northern end of central uplift in Dongpu Sag and is a deep part of the Weicheng Oilfield structure. By detailed core observation and analysis of logging data characteristics, we can identify two main types of barrier and interlayer in Sha-4 Formation, including muddy barrier and interlayer and gray interlayer. This article describes the distribution characteristics of the barrier and interlayer from three aspects: plane, crosswell profile and well group distribution. The corresponding three-dimensional distribution model of the barrier and interlayer based on structural model has been constructed, which reflects the distribution rule across the barrier and interlayer and help to guide internal dig potential development of the low permeability oilfield.

Sequence stratigraphic features of the Jurassic succession in Central Junggar Basin were investigated by integrating multiple materials including cores, well and seismic data. Due to their unique formation mechanism, sequences of the target interval were analyzed with a binary systems tract mode (each complete sequence contains a transgressive systems tract and a highstand systems tract) rather than the traditional one. Basic principles and analytical methods of high-resolution sequence stratigraphy were also applied to this research. By adopting cyclic correlation and hierarchical control techniques, eight sequences (Sq1-Sq8) were identified in the target interval. Especially, coal seams are of great significance in the sequence identification and they were considered to be closely relevant to maximum flooding surfaces (mfs).