Advanced Materials Research Vols. 652-654

Abstract: Low energy sedimentary environment with weak water power and high salinity of formation water are the main requirements of low-resistance oil layer development. Whereas part of formation penetrated by hydrocarbon migration, which shows larger bend degrees of conductive tunnels in formation and higher resistivity measurement due to the oxidization of the residual crude oil, forms high-resistance water layer. Because of the complexity of accumulation conditions, these two difficult reservoirs exist in Putaohua reservoir of Weixing oilfield widely. Combined with these accumulation regularities, this paper analyzes and summarizes the complex oil and water distribution characteristics, provide recognition means, so as to enhance the logging evaluation precision of these two difficult reservoirs effectively.

Abstract: Based on the sequence stratigraphy principle, reservoir forming elements has been detailed analysis in Cretaceous system of Hailaer basin, by using core, logging and 3-D seismic data. The study shows that the thick mudstone layer in the transgressive systems tract of the super-sequence is good regional source rock .and regional caprock, meanwhile the sandbody developed in transgressive systems tract and highstand systems of the super-sequence become the regional reservoir of depression. The main hydrocarbon migration pathway is uncomformable surface, fault, frame-sandstone, or that the hydrocarbon born in source rock went into the sandstone of sublacustrine fan directly, and then, lithologic reservoirs was formed.

Abstract: By making use of the datum of seismic, drilling, logging and cores, this thesis conducted a study on the sequence stratigraphic framework and sedimentary characteristics of Denglouku-Formation in Gulong area, and analysed the sedimentary evolution mode of Denglouku Formation in Gulong area. The results show that Denglouku Formation in Gulong area can be divided into one supersequence Ⅰ, four third-order sequences (Sq1-Sq4). The depositional systems developed in Denglouku Formation in Gulong area mainly include alluvial fan, fan delta, sublacustrine fan, fluvial facies, braided river delta, shallow water delta, and lake sediment and so on. The distribution features and sedimentary evolution pattern of depositional systems of each third-order sequence are significant difference. The formations of Sq2 and lower Sq1 are controlled by rift faulting and their characteristics of sedimentary filling conform to the continental faulted basin sedimentary evolution mode. Sq3 and Sq4 formation and upper formation of Sq2 have characteristics of depression sequence stratigraphic. The upper formation of Sq2 and Sq3 formation belong to the "river - shallow delta" sedimentary model of depression basin. And Sq4 formation conforms to the “flood-overlake” model in depression basin in droughty climate.

Abstract: Finding out the parameters with strong reflecting ability to construct recognition function can improve effectively identifying precision on complicatesets of geophysics data. Based on building the evenness parameter among individuals in one set and distance parameter between two sets, we perform optimal choice on well logging items of four lithology sets named as general sedimentary rock set, volcano-clastic rock set, volcano-clastic sedimentary rock set, lava set in Hailaer Base. By using optimal selected items into model clustering technique, the precision of the lithology identification is more than 85%.

Abstract: Based on the theory of sequence stratigraphy, sequence stratigraphy framework of is established in this paper by comprehensively search of core, logging and 3-D seismic data. Zhalainuoer group in Cano Depression is divided into 5 3rd-order sequences: Sq1、Sq2、Sq3、Sq4、Sq5 from down to up. Based on the division and comparison of sequence formation, the sedimentary facies and the depositional system are proposed to study in the paper, and the main depositional systems are detailed explained. The distribution of these depositional systems is controlled by the sequence framework.

Abstract: The geological structures of Zaobei area are broken seriously, because of the whole region was divided many blocks by many faults, which could bring huge difficulty to stratigraphic correlation. The high resolution sequence stratigraphy on Zao IV group in Zaobei oilfield was studied by using core data, logging and 3D seismic data. Features of sequence boundary in all available data were identified, and the characteristics of different levels of cycles were analyzed. Zao IV group in target zone was divided into one long-term base-level cycles, seven mid-term base-level cycles and twenty one short-term base-level cycles Based on the integrated research of core data description in single well logging data Correlation in wells and large scale horizontal Correlation Constrained by 3D scismic data, the high resolution sequence frame of Zao IV group is established, it provides important basis for future reservoir prediction and description.

Abstract: A spherical composite adsorbent AWP-CaALG was prepared by the calcium alginate(CaALG) and ammonium tungstophosphate(AWP). The composite adsorbent was characterized by XRD, FT-IR and TG-DTG-DTA, it proves that the crystal structure of AWP isn’t destroyed and the adsorption ability of the composite adsorbent can be retained up to 120°C. Effects of adsorbent dosage, adsorption time, pH, temperature, concentration of Rb and K were investigated. The results show that the adsorption capacity of composite adsorbent to rubidium is 20.64mg/g.The adsorption equilibrium is gained after 24h. When the concentration ratio of K to Rb is 16, the adsorption rate of Rb can still be up to 94.1% and the Rb/K separation coefficient is 86.

Abstract: Indonesia due its archipelago has so many kinds of rocks which contain ores. With the finding in technology iron source is not iron ore alone like it use to be in the past. This research is conducted to see availability of mineral rocks in Indonesia as iron source. Four different kinds of mineral rocks are used. They are: limonite, saprolite, malachite, and chalcopyrite. Separation of limonite is done by magnetic separation process while saprolite, malachite, and chalcopyrite are done by washing separation methods. Analysis on Fe content is done at origin and roasting condition for all rocks. The results show that other mineral rocks can become iron source, separation will enhance Fe content, and lateritic nickel rocks especially limonite can be new other iron source.

Abstract: The low silicon sintered ores are prepared, where C content is 3.3%, 3.5%, 3.7%, 3.9% and 4.1%, respectively. Their metallurgical properties are also measured. The results state that the low temperature reduction degradation property in low silicon sintered ore is to achieve the best when the carbon content was 3.7%. With increasing carbon content, it has a trend that the low silicon sintered reducing gradually become variation. In this range of carbon content, softening initial temperature exceed 1230 oC, the softening interval is less than 120 oC, so suitable C content are helpful to improve metallurgical properties for low silicon sintered ore.

Abstract: The main effect on iron ore mineralization performance in the sintering process is the grain size of raw material and chemical composition. The results show that -0.5mm particles can mineralize, but +0.5mm particles remain a nucleus in sinter. This paper analyses the effect of the chemical composition on mineralization characteristics of liquid production. The relationship model is established by using regression analysis between the chemical composition and liquid formation characteristics. The mian factors of mineralization in the chemical composition: SiO2, CaO, MgO and Al2O3.